Preparing to Test a Claim about a Population Proportion

Question 1

Which condition allows us to treat the sampling distribution as approximately Normal?

Revolt · Accepted Answer

large counts condition

Question 2

0.18X 0.82✔ 0.85

Revolt · Accepted Answer

✔ 0.85

Question 3

not enough informationnot convincing evidenceconvincing evidence

Revolt · Accepted Answer

not convincing evidence

Question 4

Because the P-value of 0.010 is α = 0.05, we H0. There is to conclude that more than 75% of customers seated within 15 minutes.

Revolt · Accepted Answer

are

Question 5

Complete the statements demonstrating how each condition is met.

Revolt · Accepted Answer

✔ 152; Random: A random sample of neighborhood residents are surveyed.: 152; 10%: is less than 10% of the population of all residents of the neighborhood.: 152; Large Counts: The expected number of success and failures are 15 and , which are both at least 10.: 137

Question 6

Identify the following values that will be used to calculate our test statistic:

Revolt · Accepted Answer

✔ 0.82; =: 0.82; p0 =: 0.85; n =: 350

Question 7

Because the P-value of 0.010 is α = 0.05, we H0. There is to conclude that more than 75% of customers seated within 15 minutes.

Revolt · Accepted Answer

less than

Question 8

Let p = the true proportion of all the residents in the neighborhood who would consider banking with the credit union.

Revolt · Accepted Answer

✔ 0.14; =: 0.14; p0 =: 0.10; n =: 152

Question 9

Calculate the P-value, given that the resulting test statistic was z = –1.389.Enter your answer to 4 decimal places. If needed, use the z-table.

Revolt · Accepted Answer

0.0823

Question 10

p = The true proportion of all customer calls that are resolved by using automated options

Revolt · Accepted Answer

Because a P-value = 0.0824 is α = 0.05, we H0. There is to believe that the corporation overstates the proportion of calls that are resolved by using automated options.: greater than; Because a P-value = 0.0824 is α = 0.05, we H0. There is to believe that the corporation overstates the proportion of calls that are resolved by using automated options.: fail to reject; Because a P-value = 0.0824 is α = 0.05, we H0. There is to believe that the corporation overstates the proportion of calls that are resolved by using automated options.: not convincing evidence

Preparing to Test a Claim about a Population Proportion Answers

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