Estadística
Análisis de datos, distribuciones de probabilidad y pruebas de hipótesis.
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question 6 (2 points) which of the following is an oft - cited problem …
a) The statistics reflect official police policy rather than the amount of youth crime.
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an airline gathers data on late departures and early arrivals over a mo…
\( P(\text{late departure or early arrival}) = 0.12 + 0.27 - 0.04 \) (the third option)
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consider a single spin on the spinner shown below. which events are mut…
- landing on an unshaded portion and landing on 2 - landing on a shaded portion and landing on 3 - landing on a shaded portion and landing on an unshaded portion
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6. the boxplot summarizes information about the numbers of hours worked…
Range: $80 - 0 = 80$ Interquartile Range: $68 - 10 = 58$ ### Part b
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the following scores are written in ascending order: a, b, c, d, e, f, …
Median ### Part b
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april is randomly choosing five cds to bring in her car from the follow…
B. choosing five CDs where not all of them are pop
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dayshawn can choose two of his four t - shirts to take on a weekend tri…
\(S=\{AB, AC, AD, BC, BD, CD\}\) (the third option)
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alberto and bianca run a 50 km race. the illustration below shows the g…
- Early in the race, **Alberto** runs faster. - Alberto maintains a speed of $\boldsymbol{20}$ km/h during the first hour of the race. - Meanwhile, Bianca's running speed **increa…
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jasmine rolls a number cube 72 times. the number 2 is rolled 13 times a…
# Explanation: ## Step1: Find total favorable trials To find the number of times a 2 or 3 is rolled, we add the number of times 2 is rolled and the number of times 3 is rolled. So…
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1. after kicking, one coach likes to play practice games with 6 players…
The possible number of players are positive integer multiples of 6, such as 6, 12, 18, 24, etc. If we consider the smallest non - zero number of teams (at least 1 team), the possi…
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a farmer has an orchard that covers an area of 40 acres. he grows apple…
37.5% (which corresponds to the option "37.5%")
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mariah is randomly choosing three books to read from the following: 5 m…
- There are $_{20}C_{3}$ possible ways to choose three books to read. - There are $_{5}C_{3}$ possible ways to choose three mysteries to read. - The probability that Mariah will n…
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it is estimated that 12 large pizzas are about right to serve 38 studen…
8
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exercises 1. the following automobile prices are listed in descending o…
\(\frac{6d - a - b - c - x - y - w}{7}\) (or \(d - \frac{a + b + c + d + x + y + w}{7}\)) ### Problem 2 (Sub - part a) First, we need to sort the eight prices: \( \$31,000 \), \( …
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four swimmers, daniela, camille, brennan, and amy, compete on a relay t…
# Explanation: ## Step1: Identify the event of Camille as final swimmer First, we determine the event where Camille is the final swimmer. Looking at the sample space \( S=\{CBA, C…
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paige rolls a number cube sixty - four times. the number 4 comes up fou…
31
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carla can choose two of her three pairs of sneakers to take to a track …
\( S = \{AB, AC, BC\} \) (the third option)
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3. andre took 6 kicks and made 4 goals: \\(\frac{4}{6}\\). tom wants to…
Two possible fractions are \(\frac{6}{9}\) and \(\frac{8}{12}\) (or \(\frac{14}{21}\), \(\frac{16}{24}\) etc. when considering more than 20 kicks).
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question the box - and - whisker plot below represents some data set. w…
70
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the following newspaper type graphic illustrates the ideal family size …
Pie chart (the option would be the one labeled "Pie chart" among the choices, e.g., if the options are as in the image: the pie chart option is the correct one, so the answer is t…
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the following newspaper type graphic illustrates the ideal family size …
Dot plot
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the following bar graph shows the median income for females in a certai…
B. This graph indicates that median income for females has increased slowly over the given time period.
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question part 2 of 3 completed: 20 of 27 my score: 19.8/27 pts (73.35%)…
D. Median Income for Females (with the corresponding bar graph having a proper y - axis scale, uniform bar widths, and showing the median income trend from 2018 - 2022 accurately)
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the following bar graph shows the median income for females in a certai…
B. The vertical axis starts at 35,000 instead of 0. This tends to indicate that the median income for females changed at a faster rate than it actually did.
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what type of variable is required when drawing a time - series plot? wh…
A quantitative variable is required when drawing a time - series plot. The correct options for the reasons why time - series plots are used are: C. Time - series plots are used to…
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question part 1 of 2 complet my score: 19.3/27 what type of variable is…
A. quantitative variable
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the table below gives the number of elementary school children in 16 sc…
A. (The option with the non - decreasing curve starting from 0 and approaching 1 as the number of students increases)
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the original rectangle is 80 centimeters. calculate the length of a rec…
91.2 centimeters
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the table below gives the number of elementary school children in 16 sc…
To solve part (a) of constructing the cumulative frequency distribution, we first need to determine the frequency (number of data points) in each class interval and then calculate…
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question the box plot below represents some data set. approximately wha…
75%
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the original rectangle is 150 centimeters. calculate the length of a re…
111 centimeters
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select the correct answer. read paragraph 3 in the passage. what does t…
C. Bounding Deer
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my mother by zitkala ša (excerpt) ša, whose name means “red bird” at th…
shelter
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make a diagram to show the amount of blue paint and yellow paint jenny …
6 ounces of blue paint : 2 ounces of yellow paint Simplified ratio: $3:1$
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jenny is making tie - dyed shirts for her class with her school colors,…
| Fabric Paint | Blue | Yellow | |--------------|------|--------| | 1 | X | | | 2 | X | | | 3 | X | | | 4 | X | | | 5 | X | | | 6 | X | | | 7 | | X | | 8 | | X | | **Total** | 6 |…
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in order to decide which employees deserve a promotion, belvedere elect…
Average from Day6 to Day11: $\approx 6.33$ video cameras Predicted sales over next 7 days: 44 video cameras
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violent crimes include murder, forcible rape, robbery, and aggravated a…
- \(165 \approx \boldsymbol{170}\) - \(246 \approx \boldsymbol{250}\) - \(269 \approx \boldsymbol{270}\) - \(304 \approx \boldsymbol{300}\) - \(332 \approx \boldsymbol{330}\) - \(…
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what inequality does this number line show? write your answer starting …
\( x \geq -3 \)
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the table of ordered pairs (x, y) gives an exponential function. write …
\( y=\frac{1}{2}\times10^{x} \)
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next round! follow the three clues to find a hidden treasure. write eac…
\( 3\frac{2}{5} \) (The first box is \( 3 \), the numerator box is \( 2 \), the denominator box is \( 5 \))
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january 240 128 february 225 126 march 212 115 april 264 144 may 282 14…
The correlation coefficient (r) is $\approx 0.998$ The correlation coefficient can be improved by ignoring the bill for the month of June
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select the correct answer. what happens if the correlation coefficient …
B. There is not a linear relationship between x and y.
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the browns are moving, so mrs. brown is helping her daughter robyn pack…
D. 2
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jose buys 8 bales of hay every month for his farm animals. how many bal…
A. 56
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type the correct answer in each box. use numerals instead of words. if …
100, 5
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post test: representing and interpreting type the correct answer in eac…
median 37.5
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select the correct answer. what is the range of this data? {3, 3, 0, 8,…
D. 12
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select the correct answer. what is the mode of this data set? {8, 11, 2…
C. 15
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select the correct answer. which data set has the greatest spread for t…
A. {18, 13, 22, 17, 21, 24}
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a line passes through the points in this table. | x | y | |----|----| |…
\( 5 \)
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a line passes through the points in this table. | x | y | | -8 | 2 | | …
$\frac{3}{4}$
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drag each label to the correct location on the image. each label can be…
Each of the 5 hands should receive $4. So we drag $4 to each of the 5 hand - labeled boxes.
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a line passes through the points in this table. | x | y | | -8 | 20 | |…
$\frac{-3}{8}$
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5/10 5) what does the name genghis khan mean? □ strongest of men □ ride…
C. Ruler of all
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a line passes through the points in this table. x | y 1 | 8 13 | 28 25 …
$\frac{5}{3}$
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a line passes through the points in this table. | x | y | |----|----| |…
# Explanation: ## Step1: Recall slope formula The slope \( m \) between two points \((x_1, y_1)\) and \((x_2, y_2)\) is given by \( m=\frac{y_2 - y_1}{x_2 - x_1} \). ## Step2: Cho…
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a line passes through the points in this table. x | y 4 | 9 12 | -9 20 …
\( -\frac{9}{4} \)
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a line passes through the points in this table. | x | y | |----|----| |…
\(-\frac{7}{2}\)
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evaluate each expression using the graphs of ( y = f(x) ) and ( y = g(x…
\( 4 \) ### Part b: \( g(f(7)) \) ## Step 1: Find \( f(7) \) From the graph of \( y = f(x) \) (black curve), when \( x = 7 \), \( f(7) = 4 \) (since the black curve passes through…
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5. is the evidence in the article sufficient to fully support the argum…
C. No, because it mostly uses examples instead of data
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3. select all that apply. which two of these communication skills are r…
- Model the techniques of seeking the meaning of the new word. - Teach new vocabulary in the context of the new word being used.
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click the arrows to choose an answer from each menu. a mad of 65 means …
1. First dropdown: mean 2. Second dropdown: greater than 3. Third dropdown: higher 4. Fourth dropdown: greater than
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freshman non - freshmen total own skateboard 40 110 150 does not own sk…
1. A randomly selected student who is a freshman owns a skateboard: Probability = $0.16$ 2. A randomly selected student who does not own a skateboard is a freshman: Probability = …
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consider the following question: what was the high temperature in chica…
It is not a statistical question because the data is a single number.
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olga has a drawer of socks with 4 red pairs, 2 gray pairs, and 8 black …
The probability that Olga will randomly select a red pair of socks is $\frac{2}{7}$, and the probability that she will randomly select a red hairband is $\frac{1}{4}$. The probabi…
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the value of a bicycle was recorded over a period of five years. based …
No, the residuals would tend to be one-sided.
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at a local college, 100 students were asked about their major fields of…
$\frac{7}{10}$
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4 which scatter plot does not show an appropriate line of best fit? a b…
C. The scatter plot with a downward-sloping line that does not align with most data points
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a safe has a 4-digit lock code that does not include zero as a digit an…
s (filling the blanks in order): First blank: 9 Second blank: 3024 Third blank: 4 Fourth blank: 24
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in the following passage, author joan didion describes her female ances…
The best evidence includes: - "They tended to accommodate any means in pursuit of an uncertain end. They tended to avoid dwelling on just what that end might imply." - "The past c…
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a hang glider is soaring over a 100 - acre area that consists of thick …
0.8
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ten identical slips of paper each contain one number from one to ten, i…
- \( P(6) = P(1) \) (true) - \( P(>10) = 0 \) (true) - \( S = \{1, 2, 3, 4, 5, 6, 7, 8, 9, 10\} \) (true) - If \( A\subset S \); \( A \) could be \( \{1, 3, 5, 7, 9\} \) (true) So…
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heights of adult males are known to have a normal distribution. a resea…
B. The sum of the relative frequencies is 124%, but it should be 100%, with a small possible round - off error D. All of the relative frequencies appear to be roughly the same. If…
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read the passage. pudge pudge is an american bulldog with a lot of pers…
When the backyard has been secured, he comes back inside and settles down for a solid nap.
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which best describes how a proxy war differs from a traditional war? th…
The opposing powers in a proxy war use others to fight on their behalf.
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egypt nationalized the suez canal during the suez crisis. what does thi…
A. The Egyptian government took control of the canal.
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in 2006, a sample of a radioactive substance had a mass of 550 milligra…
\(y = 550(0.923)^t\)
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suppose that the dollar value ( v(t) ) of a certain house that is ( t )…
s: - Initial value of the house: \(\$295300\) - The function represents: decay - Percentage change each year: \(21\%\) (decrease, so the change is \(- 21\%\) but the question asks…
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in \ozymandias,\ how does the decayed condition of the statue affect th…
C. It symbolizes the unstoppable passage of time.
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no additional details were added for this assignment. and wrinkled lip,…
A. It suggests that Ozymandias was a cruel ruler.
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1) the school that imani goes to is selling tickets to the annual talen…
C. adult ticket: $10, student ticket: $5
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read the excerpt from \ozymandias.\ round the decay of that colossal wr…
D. They stress the idea of endlessness.
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the table shows the amount of each type of juice in fruit punch. what i…
$4\frac{2}{3}$ cups
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population of webb county, texas the population of webb county, texas, …
278,500
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jabari drives $3\\frac{5}{10}$ miles to the bank. then he drives $\\fra…
$3\frac{4}{5}$ miles
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in how many ways can the letters in the word balloon be arranged? 210 1…
1,260
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jason drives $3\\frac{5}{10}$ miles to the bank. then he drives $\\frac…
$3\frac{4}{5}$ miles
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a librarian chooses seven holiday books from a selection of ten to be d…
120
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eli chooses two shirts from a group of five to pack for a weekend trip.…
- The combination of AB and BA are the same. - Each shirt can be paired with any one of other the remaining shirts. - If he chooses shirt B, there are four possible outcomes for c…
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what is the total distance eliza bikes? write your answer as a mixed nu…
$1\frac{9}{10}$ miles
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three students, angie, bradley, and camell, are being selected for thre…
ABC, ACB, BCA, BAC, CAB, CBA
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10 numeric 1 point a cannery processed 425 pounds of strawberries in 2.…
1720 --- ### Problem 11
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______ refers to the attempt to minimize cultural differences and turn …
B. Russification
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a committee of four is formed from five eligible members. let the eligi…
- If persons A and C must be on the committee, there are three ways to form the committee. (True) - If the number of eligible members increases, the number of outcomes increases. …
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how does the correlation coefficient describe strength of linear associ…
The correlation coefficient (\(r\)) ranges from \(-1\) to \(1\). \(r = 1\) means a perfect positive linear association, \(r=-1\) means a perfect negative linear association, and \…
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population of a pigeons in a city is 7,000 and is growing exponentially…
Function: \( f(t) = 7000(1.0441)^{4t} \) Percentage of change per quarter: \( 4.41\% \)
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linear relationship. below are two scatter plots with given lines of be…
The correlation coefficient for men’s income is lower because the data points in the men’s income scatter plot are more widely scattered around the line of best fit (showing less …
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as you answer the questions below, consider how the value of the correl…
The correlation coefficient for men’s income is lower because the data points in the men’s income scatter plot are more widely scattered around the line of best fit (showing a wea…
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what does the slope mean in this situation? slope = \\(\\frac{\\text{ve…
After each day, the length of the scarf increases by 4.5 centimeters.
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on two examinations, you have grades of 83 and 94 there is an optional …
a. 93 b. You must get a grade less than 63 on the final.