Estadística
Análisis de datos, distribuciones de probabilidad y pruebas de hipótesis.
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the teachers at a middle school counted how many computers they had in …
6
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after hip surgery, your physical therapist tells you to slowly return t…
9
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the school district compared how many swings each elementary school has…
4
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what is the mode? -4 -8 -5 -9 -8 -5 -2 -5 -9 -2
\(-5\)
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what is the median? 1 0 -4 0 5 -1
\(0\)
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error analysis: example 1 (1 error): michelle and justin surveyed their…
To address the error analysis for these examples, we'll examine each one: ### Example 1 - **Error**: Misunderstanding skewness. A right - skewed (positively skewed) distribution h…
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what is the range? 0 -7 -4 -4 0 -9
\(9\)
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what is the mode? 7 6 6 7 4 7 4
7
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4. if you take the number of points the panthers football team scored i…
10
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todd created a box plot based on this data set: 41 50 51 52 52 52 52 52…
# Explanation: ## Step1: Analyze original data Original data: \(41, 50, 51, 52, 52, 52, 52, 52, 60, 60, 61, 68, 75, 90\) (14 data points). - Median (Q2): For \(n = 14\), median is…
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debra is helping her little brother learn multiplication facts. each we…
- the number of times Debra's brother got 40 out of 40 correct - the lowest number of correct answers
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what are the errors? important ideas (4 errors): 1) a distribution desc…
1. Corrected statement 2: The shape of a distribution can be described as symmetric, skewed left, or skewed right. 2. Corrected statement 3: Different representations (dot plots, …
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what are the domain and range of this function? (7, -6) (-4, -10) (0, -…
B. domain: \(\{-4, 0, 4, 7\}\) range: \(\{-10, -8, -6, 6\}\) (where B is the option with domain \(\{-4, 0, 4, 7\}\) and range \(\{-10, -8, -6, 6\}\))
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what are the domain and range of this function? (5, 10) (4, 6) (-7, -9)…
B. domain: \(\{-7, -3, 0, 4, 5, 7\}\) range: \(\{-9, -4, -1, 6, 10\}\)
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what are the domain and range of this function? (-1, 10) (4, -5) (10, 9…
domain: \(\{-1, 4, 6, 10\}\) range: \(\{-5, 6, 9, 10\}\) (the last option in the given choices)
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what are the domain and range of this function? (-7, -7) (9, 7) (-10, -…
B. domain: \(\{-10, -7, -2, 5, 8, 9\}\) range: \(\{-8, -7, -2, 5, 7\}\)
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what is the domain of this function? (4, -6) (-1, 10) (5, 10) (-3, 0) (…
{-3, -1, 4, 5, 10} (the first option)
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what is the range of this function? (5, 5) (3, 1) (8, 10) (-3, -7) (-1,…
\(\{-7, 1, 5, 9, 10\}\) (the second option)
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what is the range of this function? graph of a coordinate plane with se…
\(\{-1, 2, 3, 5\}\)
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part a which of the following sentences best states a central idea of \…
Part A: B. Purposefulness, dedication, and belief in oneself are the keys to success. Part B: A. "The only thing that separates you from CEOs in corner offices or scientists in la…
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a school conducts a recipe contest in which 1 student gets first place,…
The top - left "Probability Distribution" graph (with $P_X(x)$ on y - axis from 0 to 0.8, "No prize" bar around 0.7, small bars for 1st, 2nd, 3rd and a bar around 0.2 for 4th).
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a family has two children. if b represents a boy and g represents a gir…
The probability distribution \( P_X(x) \) is the table with: | \( X \) | \( P_X(x) \) | | ---- | ---- | | 0 | 0.25 | | 1 | 0.5 | | 2 | 0.25 |
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jordan has saved $50. he got a summer job mowing lawns, and gets $8 for…
Jordan needs to mow 6 lawns to have enough money to buy the concert ticket.
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which statement primarily appeals to ethos, or character, to support th…
After switching to a standing desk—like many Americans, I used to spend most of my day sitting—I experienced subtle but meaningful health benefits: I improved my posture and found…
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a spinner contains four sections: red, blue, green, and yellow. joaquin…
The correct probability distribution is the fourth one (the one with \( P(X = 0)=0.5625 \), \( P(X = 1)=0.375 \), \( P(X = 2)=0.0625 \)): | Yellow: \( X \) | Probability: \( P_X(x…
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jordan has saved $50. he got a summer job mowing lawns, and gets $8 for…
Jordan needs to mow 6 lawns to have enough money to buy the concert ticket.
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taylor surveys students in one grade level who own at least one pet. sh…
The bottom - right probability distribution graph (the fourth one)
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two fair dice, one yellow and one blue, are rolled. the value of the bl…
symmetric
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a teacher assigns a score from 1 to 4 to each student project. the tabl…
3
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a spinner has two equal sections, one green and one orange. the spinner…
The top - right probability distribution graph (with \( P(X) \) values ~0.125 for \( X = 0 \) and \( X = 3 \), ~0.375 for \( X = 1 \) and \( X = 2 \)) represents the probability d…
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which of the following represents a valid probability distribution? pro…
Probability Distribution B (where \( X \) has \( P(x) \) values \( 0 \) (for \( x = 1 \)), \( 0.45 \) (for \( x = 2 \)), \( 0.16 \) (for \( x = 3 \)), and \( 0.39 \) (for \( x = 4…
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a spinner is divided into two equal parts, one red and one blue. the se…
The probability distribution table with \( X = 0 \) (0.25), \( X = 1 \) (0.5), \( X = 2 \) (0.25) (the second table among the four options).
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a teacher asks her students to write down the number of hours studied, …
1.50
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focus question: when is it appropriate to use the mean and median to su…
- It is best to use the mean when the shape of the distribution is **symmetric (e.g., normal distribution)** because the mean is a good measure of central tendency when data is ev…
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what type of data distribution is shown on the graph? positively skewed…
positively skewed
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what type of data distribution is shown on the graph? positively skewed…
positively skewed
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classifying data distributions the probabil dropdown viewed. the mean i…
To analyze the data distribution: ### Step 1: Identify the Distribution Shape The bar graph (probability distribution) shows values of \( x \) (1, 2, 3, 4, 5, 6) with probabilitie…
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classifying data distributions the probability distribution the mean is…
The probability distribution is negatively skewed. The mean is less than the mode. The mode is 6.
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finding the probabilities of multiple events defective parts: x | proba…
0.04 ### Second Sub - Question: Probability of finding defects
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identifying a valid probability distribution which of the following rep…
Probability Distribution A (with \( X \) values 0,1,2,3 and \( p(x) \) values 0,0,0,1) is the valid probability distribution.
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identifying the probability distribution graph a 4 - section spinner is…
The first graph (with Y - axis labeled P(X) from 0 to 0.6, X=0 bar ~0.6, X=1 ~0.4, X=2 ~0.06)
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the fair spinner shown is spun 2 times. the set of possible outcomes ar…
0.375
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finding the mean of a probability distribution x | probability: p(x) 0 …
\( P(X = 3) = 0.2 \) ### Part 2: Find the mean of the probability distribution
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what is the probability of spinning a yellow? □/4 what is the probabili…
\( \frac{1}{4} \) (so the numerator is 1, filling 1 in the first box) ### Second Sub - Question: Probability of spinning a yellow or a green
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properties of probability distributions the fair spinner shown is spun …
- The probability of each outcome is equal. - The outcomes have a uniform probability distribution.
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classifying data distributions what type of the graph? negatively skewe…
less than the median
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(370831030) properties of probability distributions classifying data di…
For the mean: less than the median For the mode: 3
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classifying data distributions what type of data distribution is shown …
Distribution type: negatively skewed The mean is less than the mode The mode is 3 (Assuming the dropdowns: for "The mean is", options like "less than the mode", "equal to the mode…
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1. in the year 10% of the world’s population will speak equaling about …
1. 2050 2. Vulgar Latin 3. Romance languages 4. Castilian, Catalan, Galician, Basque, Valencian 5. The Moors 6. Approximately 4,000 words 7. "The" 8. *Olla* (pot) 9. 700 years 10.…
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1. in the year 10% of the world’s population will speak equaling about …
1. 2050 2. Vulgar Latin 3. Romance languages 4. Castilian, Catalan, Galician, Basque, Valencian 5. The Moors 6. Approximately 4,000 words 7. "The" 8. *Olla* (pot) 9. 700 years 10.…
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9 on winter days, rachel feeds each of her chickens \\(\frac{3}{4}\\) c…
$\frac{1}{12}$ cup
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an ad for seat belts claimed that proper usage of seat belts educes the…
D. If seat belts eliminated all fatalities, it would result in a 100% reduction, so it is not possible to reduce fatalities by more than 100%.
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determine whether the results below appear to have statistical signific…
B. No, the program is not statistically significant because the results are likely to occur by chance. ### Second Question (Practical Significance)
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pedro has a part - time job at an ice skating rink selling hot cocoa. h…
The rate of change in the expected number of hot cocoas over the day's high temperature.
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kalantras math teacher plots student grades on their weekly quizzes aga…
The change in expected quiz score for every additional one hour students spend on their homework.
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question fawzias math teacher plots student grades on their weekly quiz…
A prediction of a student's quiz score if they spent 1 hour on their homework.
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autumns math teacher plots student grades on their weekly quizzes again…
The change in expected quiz score for every additional one hour students spend on their homework.
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levi keeps track of the number of people inside a music hall to attend …
At 7:30, Levi should expect about 184.3 people in the music hall.
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scatter plot practice due: january 20 at 3:00 pm grade: 86% answer heig…
An expected height of 168.4 centimeters when the femur has a length of 50 centimeters.
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test content page 2 of 25 question 2 the word teratogen comes from the …
B. monster
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jamal decides to research the relationship between the length in inches…
45 inches
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renaissance means ebirth\. in history, the renaissance refers to a peri…
One example is 1990s baggy denim (including wide-leg jeans and overalls). This trend was dominant in the 1990s, fell out of mainstream popularity in the 2000s and 2010s, and has e…
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carlos won 83 lollipops playing the bean bag toss at his schools game n…
A. 8
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type the correct answer in each box. use numerals instead of words. if …
s: - The maximum profit the florist will earn from selling celebration bouquets is $ \boldsymbol{675} $. - The florist will break - even after \( \boldsymbol{20} \) one - dollar d…
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how can you describe 0.15? when a whole is divided into 100 equal parts…
1. How can you describe 0.15? 0.15 is equal to $\frac{15}{100}$, which means it represents 15 out of 100 equal parts of a whole. 2. What is a decimal? A decimal, like a fraction o…
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how can you describe 0.15? when a whole is divided into 100 equal parts…
1. How can you describe 0.15? 0.15 is equal to $\frac{15}{100}$, which means it represents 15 out of 100 equal parts of a whole. 2. What is a decimal? A decimal, like a fraction o…
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adult tickets for a concert cost $10.00, and student tickets cost $12.0…
adult tickets: 610 student tickets: 1220
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question 4 __________ is a perception, thought, or feeling someone want…
Meaning
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moshi and her best friend have phrases they use with each other that ha…
Moshi and her best friend have decided what these symbols mean.
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marshall mcluhan used the term ________ to describe the medias ability …
A. global village
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graphing. independent and dependent variables terry dailey multiple-cho…
B. the independent variable and on the x axis
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hannah plays basketball\ is a true statement and \bashir flips a coin a…
both of the connected statements are true; the combined statement's truth cannot be confirmed (we only know one part is true, the other's truth is unspecified)
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if \triangle def is a right triangle\ is a false statement, \its chilly…
True (Or statements are true if at least one of the statements is true.)
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rohan is the manager at a restaurant. the graph shows the relationship …
24
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gary and heather each make cheesy potatoes using different recipes. the…
Gary 2. For every [x] oz of potatoes, Gary uses [y] oz of cheese (and comparison):
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the data in the figure below represents the number of stars earned by 1…
21
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determine whether the given value is from a discrete or continuous data…
C. A discrete data set because there are a finite number of possible values.
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state whether the data described below are discrete or continuous, and …
B. The data are discrete because the data can only take on specific values.
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determine whether the underlined number is a statistic or a parameter. …
Parameter because the value is a numerical measurement describing a characteristic of a population. (The option corresponding to this description among the given choices, e.g., if…
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in a study of all babies born at hospitals in one state, it was found t…
C. The value is a parameter because it describes some characteristic of a population.
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state whether the data described below are discrete or continuous, and …
B. The data are discrete because the data can only take on specific values.
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determine whether the underlined number is a statistic or a parameter. …
Statistic because the value is a numerical measurement describing a characteristic of a sample. (The option corresponding to this description, likely the third option in the list:…
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a magazine ran a survey about a web site for downloading music. readers…
C. The sample is a voluntary response sample, so there is a good chance that the results do not reflect the population.
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the graph below shows the rate of change for the number of people in a …
300 people
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and try to solve the problem below. jack has $\frac{2}{3}$ pint of wate…
$\frac{1}{6}$ pint
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solve the problem. show your work. darin and his mom go camping. the tr…
The length of the trail to the overlook is $\frac{7}{8}$ mile, and the length of the trail to the river is $\frac{3}{8}$ mile.
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karma says that the fraction \\(\\frac{7}{8}\\) is equivalent to \\(\\f…
Kama is not right. To determine if $\frac{7}{8}$ and $\frac{3}{4}$ are equivalent, we find a common denominator (8). Rewrite $\frac{3}{4}$ as $\frac{3\times2}{4\times2}=\frac{6}{8…
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jay had as many nickels as dimes and twice as many quarters as his nick…
\$20
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question 9 of 10 which of the following words means the opposite of gen…
B. Méchant.
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question 9 of 10 which of the following words means the opposite of gen…
B. Méchant
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4) what is 15% of 200?
30
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4) what is 15% of 200?
30
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jay had as many nickels as dimes and twice as many quarters as his nick…
\$20
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show all of your work ential function? explain your reasoning. b. | x |…
The function represented by the table is not an exponential function. It is a linear function because the slope between consecutive points (where \( x \) increases by 4 each time)…
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unit 6 formative 6.3 formative (2 sides) does the table represent a lin…
The table represents an exponential function.
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does the table represent a linear, or an exponential function? explain …
Exponential (because the ratio of consecutive \( y \)-values is constant (\( \frac{1}{2} \)) while the slope is not constant) ### Part b
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multiple choice what is the function of zoning laws? regulating the loc…
1. regulating the locations where commercial, industrial, recreational, and residential activities can take place 2. to comply with Occupational Safety and Health Administration (…
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what is the mode? -76 -73 -75 -75 -76 -75 -73 -74
-75
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colton checked the prices of 8 items available for purchase in the cafe…
$\$20.00$
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mona measured the dolls in her doll collection so she could build a new…
8