統計與機率
資料分析、機率分佈、假設檢定與統計方法。
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conjugación de verbos - verb conjugations hoy today on the 1st line wri…
1. Line 1: Nosotros Line 2: corremos, compramos, abrimos Line 3: We run, buy, open 2. Line 1: Él Line 2: come, pregunta, abre Line 3: He eats, asks, opens 3. Line 1: Ellos Line 2:…
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purposeful practice for points 1 through 4, find the slope and the y - …
1) Slope: $-3$, Y-intercept: $-4$ 2) Slope: $3$, Y-intercept: $2$ 3) Slope: $-0.5$, Y-intercept: $3$ 4) Slope: $8$, Y-intercept: $8$
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solving a proportion the proportion used to find the average number of …
140
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writing a proportion the table shows two samples of fish from a pond. i…
$\frac{7}{20} = \frac{x}{400}$ (the third option)
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tim explained a function in words and paul wrote an equation. the amoun…
Tim's with a y-intercept of $2,780$
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colleen observed a candy store and counted the number of bars of chocol…
5
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ndom survey asked two samples of 100 high school dents how much time th…
About the same number of students spend 0-30 minutes on homework as spend 31-60 minutes.
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making a valid inference a random survey asked two groups of 100 women …
pants
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3 friends eat a whole pizza. each friend eats 3 pieces. how many pieces…
9
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review the sixth paragraph. 6 does this mean that schools should requir…
- It is a religious practice. - There is no evidence that it improves test scores.
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review the fifth paragraph. 5 stress in particular is something mindful…
Healthy stress helps people face challenges, while toxic stress is overwhelming.
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1. what is the belief that humans have potential and can improve the wo…
1. Humanism 2. Reason
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determine whether the statement describes a descriptive or inferential …
Inferential Statistic
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determine if the numerical value describes a parameter or a statistic. …
Sample Statistic
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making an inference in two sample surveys, 125 people were asked about …
Yes, this inference is true. When combining the results of both surveys, oranges received 127 out of 250 total votes, which is the highest number of votes and represents a majorit…
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7. in \mending wall,\ the neighbor tells the speaker, \good fences make…
He believes establishing boundaries helps preserve relationships.
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question 6 of 10, step 1 of 1 determine whether the statement describes…
Population
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determine if the numerical value describes a parameter or a statistic. …
Sample Statistic
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practice making inferences based on multiple samples. a survey was cond…
- About twice as many people prefer apples as prefer bananas. - Bananas are preferred much less frequently than apples or oranges. - The samples show little variation for each fru…
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determine whether the statement describes a descriptive or inferential …
Descriptive Statistic
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question 2 of 10, step 1 of 1 determine whether the statement describes…
Sample
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Question was provided via image upload.
a. C. Yes, because the sample is a simple random sample, the sample proportion is between 10% and 90%, and there are at least 20 "successes" and 20 "failures." b. $(0.246, 0.634)$…
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(a) a certain arcade game gives players tickets. the table below shows …
Correct description: Each point appears to give the same number of tickets. Predicted number of points that give 70 tickets: 10
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some students wrote poems for a contest. writing poems how many student…
4
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this question has two parts. first, answer part a. then, answer part b.…
\( 8953.5 \) ### Part B
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in a round - robin chess tournament, each player is paired with every o…
$(6, 15)$
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alexa aleksanian assignment compare texts now it is time to write about…
Sample comparative response (focused on *"Do Not Go Gentle into That Good Night"* and *"The Charge of the Light Brigade"*): ## Paragraph 1 The core conflicts and narrative perspec…
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the average resting heart rate of a population is 90 beats per minute, …
s: (a) $z\approx\boldsymbol{2.73}$ (b) $z\approx\boldsymbol{-1.36}$ Question 8: The American man
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question 6 calculate the 20th percentile of the data shown x 3.6 4.4 6.…
5.25
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question 4 complete the following statements. the first quartile (q1) c…
The first quartile (Q1) corresponds to the $\boldsymbol{25}$th percentile. The median corresponds to the $\boldsymbol{50}$th percentile. The third quartile (Q3) corresponds to the…
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here is a sample data set. 307.1 314.4 316. 321.8 334.9 348.6 352 388.2…
# Explanation: ## Step 1: Count the number of data points First, we count the number of data points. Let's list them: Row 1: 6 values (307.1, 314.4, 316.?, 321.8, 334.9, 348.6) Ro…
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ms. langs students came to school dressed up for halloween. she listed …
2
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this line plot shows the lengths of some nature trails. lengths of trai…
C. $\frac{5}{8}$ of a mile
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a farmer grew 1,200 pumpkins. she loaded 20 pumpkins in each crate. how…
60 crates
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valeria is planting rows of sunflowers. each row has 12 plants. complet…
For 4 rows: 48 plants; For 5 rows: 60 plants
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question 1 find the first and third quartile for the quantitative data.…
\(Q_1 = 7.1\) \(Q_3 = 22.5\)
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carlos and isabel each opened a savings accou account with a starting a…
(a) Amount of money in Carlos's account (in dollars) = $490 + 30x$ Amount of money in Isabel's account (in dollars) = $490 + 40x$ (b) $490 + 30x = 490 + 40x$
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devin recorded the number of hours he played a video game, x, and the l…
# Explanation: ## Step1: Identify the regression equation The line of best fit is given by \( y = 1.82x + 0.117 \), where \( y \) is the level achieved and \( x \) is the number o…
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students in mrs. austens math class guessed a number between 1 and 5 an…
12
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some students spun a wheel that had numbers from 0 to 5 on it. spinning…
0
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a teacher counted the number of times that students went down the slide…
13
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the art teacher wrote down how many flower pots each child painted last…
3
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the regression calculator shows the relationship between the hours devi…
\( \boldsymbol{5} \) (corresponding to the option: 5)
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here is a data set summarized as a stem-and-leaf plot: 1# | 022344579 2…
$n = 31$ ### Sub - question 2: What is the minimum value in the last class?
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here is a data set summarized as a stem-and-leaf plot: 5# | 11123889 6#…
s: - For "How many data values are in this data set?": \(n = 31\) - For "What is the minimum value in the last class?": \(87\) - For "What is the frequency of the class with the m…
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question 22 here is a data set: 52 78 62 61 62 54 59 67 70 54 56 66 65 …
145 ### Question 23
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norville is examining the time spent studying by college students. he c…
\(2.166\)
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order these numbers from least to greatest. \\( -dfrac{8}{18} \\), \\( …
$-0.45 < -\frac{8}{18} < \sqrt{17} < \frac{84}{20}$
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question 8 - 1 point if the median of a data set is 72 and the mean is …
The data are skewed to the right.
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daphne is examining the alcohol consumed by american men. she collects …
\(9.232\)
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how many individuals are represented in the histogram? note: is is also…
# Explanation: ## Step1: Identify each bar's frequency Looking at the sugar histogram: - 120 - 122: frequency 2 - 122 - 124: frequency 8 - 124 - 126: frequency 14 - 126 - 128: fre…
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a coffee shop recorded the number of customers per day over a period of…
The number of customers who came into the coffee shop on Labor Day is within 2 standard deviations to the right of the mean.
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match the histogram with word that best describes it. a. left skewed b.…
e. Uniform ### Second Histogram (Bottom One)
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the list below shows the number of new accounts opened by employees 48 …
2
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carlos and devon both accepted new jobs at different companies. carloss…
Carlos's z - score: $\boldsymbol{-2.43}$; Devon's z - score: $\boldsymbol{-1.67}$
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question 2 · 1 point a random sample of monthly sales at a gas station …
$2.50\%$
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using the regression calculator ria is starting a running program. the …
\( y = \boldsymbol{1.671}x + \boldsymbol{4.700} \)
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solve the inequality and exp solution set on the real num 9x + 9 > 9(x …
There is no real number solution (the inequality is never true, so no option provided is correct; the statement $9>63$ is false, meaning no $x$ satisfies the original inequality).
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stem (hundred thousands) | leaf (ten thousands) 0 | 667778999 1 | 03447…
330000
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in an october 2018 gallup poll on the death penalty, the pollster split…
A. Response bias
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1 multiple choice 4 points what is the fifth term of the arithmetic seq…
1. 0 2. 28 3. $0.12$
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the data in the figure below represents the number of stars earned by 1…
28
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the line graph below shows the number of times maria drove her car each…
6 ### Second Sub - Question (Bottom Line Graph)
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the following data represents the age of 30 lottery winners. 22 25 27 2…
| Age | Frequency | |-------|-----------| | 20 - 29 | 6 | | 30 - 39 | 9 | | 40 - 49 | 2 | | 50 - 59 | 3 | | 60 - 69 | 5 | | 70 - 79 | 4 | | 80 - 89 | 1 | (If only the numbers are …
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often a point of confusion with this homework system is that if you sta…
11.4
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in a round - robin chess tournament, each player is paired with every o…
8 players
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does the relation shown below define a function? yes no
No (the option "No" should be selected as the graph does not represent a function because it fails the vertical line test, meaning there are x - values with more than one correspo…
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which function can be used to model the data in this table? \begin{tabu…
D. \( f(x)=\frac{3}{4}x + 1 \)
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which function can be used to model the data in this table? | $x$ | $f(…
B. \( f(x)=-\frac{3}{2}x - 1 \)
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if a function f(m) models the number of hours it take to hike m miles t…
D. all rational numbers m, where \(m\geq0\)
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a morning consult/polltico poll of 1997 registered voters in july 2020 …
a) $0.025$ b) A. One is 99% confident that the observed proportion of adults that responded "Wrong Track" is within $0.025$ of the population proportion.
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a morning consult/politico poll of 1997 registered voters in july 2020 …
0.025
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gallup regularly conducts a poll using a \cantril scale,\ which asks re…
b) $0.0035340$ c) D. The standard error is the best estimate of the standard deviation of the sampling distribution of the proportions, which measures the amount of variation in t…
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gallup regularly conducts a poll using a \cantril scale,\ which asks re…
a) D. The meaning of $\hat{p}=0.488$ is that 48.8% of the 20,006 people in the sample were classified as thriving. This is the researchers' best estimate of $p$, the proportion of…
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6. (05.02 lc) the number of pieces of popcorn in a large movie theatre …
Approximately 68%
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5. (05.02 mc) the employees of two companies were asked how many times …
The interquartile range for Company A employees is 2.5 more than the interquartile range for Company B employees.
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4. (05.02 lc) two groups of students were asked how far they lived from…
It is greater for Group B than Group A.
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4. the temperature of a substance was recorded over several minutes, as…
C. The temperature is increasing \( 1.25^\circ \text{C} \) each minute
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3. (05.01 mc) the following data shows wind speed in a city, in miles p…
The correct box plot is the second option: the plot with whiskers at 9.1 and 9.8, box edges at ~9.25 and 9.7, and median line at 9.4.
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1. (05.01 lc) the following data set shows the pulse rate of some cattl…
The correct dot plot is the one with 4 dots above 65, 4 dots above 68, 4 dots above 67, and 5 dots above 69 (the fourth option in the list).
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the table shows the temperature of a greenhouse where the temperature w…
an increase of 2 degrees in temperature for each hour of time
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anything less than ______ for african americans would betray the civil …
c. full citizenship
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for most formerly enslaved people, freedom first and foremost meant a. …
a. landownership.
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it is so hot that jacobs cousins ask him to make creamy mango smoothies…
2 cups
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dustin is excited to have fresh basil at home, he buys a 4-inch-tall ba…
10 inches
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lily has been baking all weekend for her schools bake sale. she used 12…
2 pounds
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the mass of a substance, which follows a continuous exponential growth …
\( y = 1.8 e^{\frac{\ln(2)}{9}t} \) ### Part (b)
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question 38 2 points a(n) ______ is conducted in order to determine whe…
C. statistical analysis
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question 32 which of the following represents a strong negative correla…
-0.9 (the option with -0.9, e.g., if the options are labeled as: C. -0.9, then the answer is C. -0.9)
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type the correct answer in the box. use numerals instead of words. how …
900
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select the correct answer from each drop - down menu. a cross country r…
1. permutation 2. 3,575,880
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select the correct answer an ice cream shop has 15 different toppings f…
B. 455
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select the correct answer. judges at an art competition must select fir…
A. 1,320
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select the correct answer. at a high school there are 53 players on the…
C. 8,162
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select the correct answer. at the auditions, 40 students tried out for …
C. 2,311,801,440
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enter the correct answer in the box. an algebra class has 21 students w…
$n=21$, $r=2$
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select the correct answer. what is the number of possible combinations …
B. 1,001
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choose 1 answer: a ( x < 4 ) b ( x leq 4 ) c ( x > 4 ) d ( x geq 4 )
D. \( x \geq 4 \)
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this situation can be modeled as a linear relationship. what does the y…
The battery's charge is 50 kilowatt - hours before Emily's family starts driving.
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choose 1 answer: a ( x < -4 ) b ( x leq -4 ) c ( x > -4 ) d ( x geq -4 )
D. \(x\geq - 4\)