QUESTION 1

1 POINT

Given that Cheryl is collecting data on car color, what type of data is she working with?

Select the correct answer below:

qualitative

discrete quantitative

continuous quantitative

none of the above

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QUESTION 2

1 POINT

You purchase boxes of cereal until you obtain one with the collector's toy you want. If, on average, you get the toy you want in every30th cereal box, what is the probability of getting the toy you want in any given cereal box? (Round your answer to3decimal places.)

Provide your answer below:

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QUESTION 3

1 POINT

In a particular region, for families with a combined income of$75,000or more,15%of these families have no children,35%of the families have one child,45%have two children, and5%have three children. Use this information to construct the probability distribution forX, wherexrepresents the number of children per family for this income group. Arrangexin increasing order and write the probabilitiesP(x)asdecimals.

Provide your answer below:

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QUESTION 4

1 POINT

The probability of winning on an arcade game is0.618. If you play the arcade game24times, what is the probability of winning no more than10times? (Round your answer to3decimal places, if necessary.)

Provide your answer below:

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QUESTION 5

1 POINT

Given the following frequency table of data, what is the potential outlier?

Value	Frequency
18	3
19	4
20	6
21	8
22	4
23	2
24	2
25	1
26	0
27	0
28	0
29	0
30	0
31	0
32	1

Select the correct answer below:

23

22

18

32

19

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QUESTION 6

1 POINT

A meteorologist keeps track of the time of day that the sun sets. What is the level of measurement of the data?

Select the correct answer below:

Nominal

Ordinal

Interval

Ratio

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QUESTION 7

1 POINT

Given the following list of data, find the median.

3,16,10,34,23,5,8,11,32,21,14

Give your answer as a number only. For example, if you found the median was20, you would enter20.

Provide your answer below:

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QUESTION 8

1 POINT

Two bowlers, Bruce and Donald, want to find out who has the higher three-game series score when compared to each of their leagues. Bruce has a score of500, and his league has a mean score of620and a standard deviation of20. Donald has a score of520, and his league has a mean of625and a standard deviation of25. Who has the higher three-game series score when compared to each of their leagues?

Select the correct answer below:

Bruce

Donald

The scores are equal when compared to each of their leagues.

There is not enough information.

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QUESTION 9

1 POINT

On average, Nancy has noticed that22trucks pass by her apartment daily (24hours). In order to find the probability that more than2trucks will pass her apartment in a3-hour time period using the Poisson distribution, find the average number of trucks per3hours. Round your answer to three decimal places, if necessary.

Provide your answer below:

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QUESTION 10

1 POINT

Paul wants to estimate the mean number of siblings for each student in his school. He records the number of siblings for each of100randomly selected students in the school. What is the parameter?

Select the correct answer below:

all the students in the school

the100randomly selected students

the specific number of siblings for each randomly selected student

the mean number of siblings for all students in the school

the mean number of siblings for the randomly selected students

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QUESTION 11

1 POINT

Given the following list of data, what is the five-number summary? 5,5,8,8,10,12,12,13,13,14,15

Select the correct answer below:

Min	Q1	Median	Q3	Max
5	8	12	13	15

Min	Q1	Median	Q3	Max
5	6	8	14	15

Min	Q1	Median	Q3	Max
5	9	10	11	15

Min	Q1	Median	Q3	Max
5	7	10	12	15

Min	Q1	Median	Q3	Max
5	6	7	10	15

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QUESTION 12

1 POINT

IfAandBare events withP(A)=0.2,P(AORB)=0.61, andP(AANDB)=0.19, findP(B).

Provide your answer below:

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QUESTION 13

1 POINT

IfAandBare independent events,P(A)=0.22, andP(B)=0.71, what isP(B|A)?

Provide your answer below:

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QUESTION 14

1 POINT

The bar graph below shows the number of boys and girls in different classes.

A bar graph has a horizontal axis labeled Classes and a vertical axis labeled Students from 0 to 16 in increments of 2. There are two vertical bars above each horizontal axis label, with the bar on the left representing Boys and the bar on the right representing Girls. The bars have heights as follows, with the horizontal axis label listed first and the bar heights listed second from left to right: Mrs. Brown, 10 and 15; Ms. James, 11 and 12.

How many total students are in Ms. James's class? Do not include the units in your answer.

Provide your answer below:

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QUESTION 15

1 POINT

Jennifer wants to estimate the percentage of parents that use cloth diapers. She asks a randomly selected group of200parents whether or not they use cloth diapers. What is the parameter?

Select the correct answer below:

the200people surveyed

the percentage of surveyed parents that use cloth diapers

the percentage of all parents that use cloth diapers

specific "yes" or "no" responses to the survey

all parents that use cloth diapers

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QUESTION 16

1 POINT

A bag contains8RED beads,9BLUE beads, and3GREEN beads. If a single bead is picked at random, what is the probability that the bead is RED or GREEN?

Provide your answer below:

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QUESTION 17

1 POINT

For which of the following sets of data is a pie chart appropriate? Assume that only the two given categories will be included.

Select the correct answer below:

the percentage of people who jog more than three times a week and the percentage of people who lift weights more than three times per week

the percentage of people that own dogs and the percentage of people that own cats

the percentage of workers with college degrees and the percentage of workers without college degrees

the percentage of people who like horror films and the percentage of people who like romantic dramas

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QUESTION 18

1 POINT

Trialbestfits which of the following descriptions?

Select the correct answer below:

a subset of the set of all outcomes of an experiment

one specific execution of an experiment

a planned activity carried out under controlled conditions

a particular result of an experiment

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QUESTION 19

1 POINT

An airline surveys its frequent fliers to see how useful they find their perks. The options are Very Useless, Somewhat Useless, Somewhat Useful, Very Useful. What is the level of measurement of the data?

Select the correct answer below:

Nominal

Ordinal

Interval

Ratio

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QUESTION 20

1 POINT

What term isbestdescribed as the property of two events in which the knowledge that one of the events occurred does not affect the chance the other occurs?

Select the correct answer below:

complement

mutually exclusive

dependent

independent

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QUESTION 21

1 POINT

A spinner contains the numbers1through50. What is the probability that the spinner will land on a number that is not a multiple of9?

• Give your answer in fraction form.

Provide your answer below:

$$

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QUESTION 22

1 POINT

Given the following list of numbers, find the mean.

4,2,13,6,4,13,14

Provide your answer below:

$$ mean=

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QUESTION 23

1 POINT

IfAandBare independent events withP(A)=0.6andP(B)=0.2, findP(AANDB).

Provide your answer below:

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QUESTION 24

1 POINT

The table below represents the probability density function for the random variableX. Find the standard deviation ofX.

• Round the final answer to two decimal places.

x	P(X = x)
0	1/4
1	1/4
2	1/4
5	1/4

Provide your answer below:

$$std=

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QUESTION 25

1 POINT

The following data set represents the salaries ofallsevenemployees at a small start-up company (expressed in thousands of dollars).

23,25,40,45,45,23,23

If the variance of the data set is99.14, what is the standard deviation?

• Round the final answer to twodecimal places.

Provide your answer below:

$$std=

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QUESTION 26

1 POINT

Given the frequency table below, what is the relative frequency of the data value7?

Value	Frequency
4	8
5	5
6	8
7	9

Provide the answer as a fraction or decimal:

Provide your answer below:

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QUESTION 27

1 POINT

Suppose that a random sample of adult maleshas a sample mean heart mass ofx=310.1grams, with a sample standard deviation ofs=6.6grams. Since adult male heart masses are generally symmetric and bell-shaped, we can apply the Empirical Rule.

Between what two masses doapproximately68%of the data occur?

Round your answer to the nearest tenth.

Provide your answer below:

Approximately$68\%$68%of the men's heart masses are between grams and grams.

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QUESTION 28

1 POINT

Given the following box-and-whisker plot, decide if the data is skewed or symmetric.

A horizontal box-and-whisker plot shares a vertical axis with the class A. A horizontal axis is labeled from 0 to 18 in increments of 2. The box-and-whisker plot class label A has the following five-number summary: 4, 6, 7, 9, and 16. All values are approximate. The part of the box at point 7 is represented with a dotted line.

Select the correct answer below:

The data are skewed to the left.

The data are skewed to the right.

The data are symmetric.

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QUESTION 29

1 POINT

	Male	Female	Total
Orange	38	68	106
Green	10	22	32
Total	48	90	138

A group of138students at an elementary school were asked if they prefer the color orange to the color green. The results are shown in the table above. Given that a randomly selected survey participant is a male, what is the probability that this student prefers the color green? (Enter your answer in fraction form.)

Provide your answer below:

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QUESTION 30

1 POINT

Given the following information about eventsA,B, andC, determine which pairs of events, if any, are independent and which pairs and mutually exclusive.

P(A)P(B)P(C)=0.42=0.25=0.01P(A|B)P(C|B)P(A|C)=0=0.01=0.42

Select all correct answers.

Select all that apply:

AandCare mutually exclusive

AandBare mutually exclusive

AandBare independent

AandCare independent

BandCare independent

BandCare mutually exclusive

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