Introduction to Hypothesis Testing

Question 1

Are the conditions for inference met? Random: We have a random sample of . 10%: 200 customers < 10% of . Large Counts: There are expected successes and expected failures, which are both at least .

Revolt · Accepted Answer

customers; Selection 1: customers; Selection 2: all customers; Selection 3: 170; Selection 4: 30; Selection 5: 10

Question 2

Question 2

Revolt · Accepted Answer

all customers

Question 3

Question 3

Revolt · Accepted Answer

170

Question 4

Question 4

Revolt · Accepted Answer

30

Question 5

Question 5

Revolt · Accepted Answer

10

Question 6

What is the value of the test statistic? (Round to 2 decimal places.) What is the P-value of the test? (Enter 4 decimal places.)

Revolt · Accepted Answer

Part 1: -1.58; Part 2: 0.0571

Question 7

The P-value of this test is 0.0571. What conclusion should be made?

Revolt · Accepted Answer

Because the P-value of 0.0571 > α = 0.05, we fail to reject H0. We do not have convincing evidence that less than 85% of customers of this company are repeat customers.

Question 8

Are the conditions for inference met? Random: We have a random sample of . 10%: 100 adults < 10% of . Large Counts: np0 = n(1 − p0)= These values are both at least .

Revolt · Accepted Answer

adults; Selection 1: adults; Selection 2: all adults; Selection 3: 25; Selection 4: 75; Selection 5: 10

Question 9

What is the value of the test statistic? (Round to 2 decimal places.) What is the P-value of the test? (Enter 4 decimal places.)

Revolt · Accepted Answer

1.62; 0.0526

Question 10

The P-value of this test is 0.0526. What conclusion should be made? Because the P-value of 0.0526 α = 0.01, we H0. We convincing evidence that 25% of adults would describe themselves as organized.

Revolt · Accepted Answer

is greater than; Selection 1: is greater than

Introduction to Hypothesis Testing Answers

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