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Expected Value Sample

Authored by Anthony Clark

Mathematics

12th Grade

Expected Value Sample
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20 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

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Identify the notation

Expected value of X

standard deviation of the sample

standard deviation of population

Example X

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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What are the expected counts of a female who likes Pepsi?

10.5

11

14.5

6.3

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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A random sample of traffic tickets given to motorists in a large city is examined.  The tickets are classified according to the race of the driver.  The results are summarized in the table provided.  Assuming H0 is true, the expected number of Hispanic drivers who would receive a ticket is

10.36

11

11.84

12

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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The table shows the number or babies born on each day of the week.  Is there evidence that births are more likely on specific days of the week?

yes, the p value is greater than .05

no, the p value is less than .05

yes, the p value is less than .05

no, the p value is greater than .05

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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Find the mean (expected value) of the probability distribution.

85

83.2

87.1

84.4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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Data was compiled and the number of goals for a hockey team per game and the corresponding probabilities are given below. If this hockey team plays an 82-game season, what is the expected cumulative goal total for the next season?

220

239

261

309

320

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Given that families continue to have children until they get a girl, what is the expected number of children per family?  Standard deviation?

Expected Value = 2  St. Dev. =1.414

Expected Value = 2  St. Dev. = 2

Expected Value = 0.5  St. Dev. = 1.414

Expected Value = 0.5 St. Dev. = 2

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