Preparing to Test a Claim about a Population Proportion

Question 1

In this situation, p = the true of all who .

Revolt · Accepted Answer

proportion

Question 2

In this situation, p = the true of all who .

Revolt · Accepted Answer

students at Chris’s school

Question 3

3. H0: p = 0.5, Ha: p < 0.5

Revolt · Accepted Answer

one-sided (lower)

Question 4

In this situation, p = the true of all that .

Revolt · Accepted Answer

proportion

Question 5

What is the appropriate test?

Revolt · Accepted Answer

z-test for one proportion

Question 6

What is the value of p?

Revolt · Accepted Answer

0.55

Question 7

The P-value of this test is 0.1586.

Revolt · Accepted Answer

The P-value of 0.1586 is greater than α = 0.05; therefore, we fail to reject H0.

Question 8

Which of the following statements are true? Check all that apply.

Revolt · Accepted Answer

H0: p = 0.76; The random condition is met.; The 10% condition is met.; The large counts condition is met.; The test is a z-test for one proportion.

Question 9

What increases the power of a test? Check all that apply.increasing the sample size and significance leveldecreasing the sample size and significance leveltrying to detect a value close to the hypothesized valuetrying to detect a value far from the hypothesized valueincreasing the probability of a Type II errordecreasing the probability of a Type II error

Revolt · Accepted Answer

increasing the sample size and significance level; trying to detect a value far from the hypothesized value; decreasing the probability of a Type II error

Question 10

What would increase the power of this test? Check all that apply.

Revolt · Accepted Answer

using n = 200 instead of n = 100; using α = 0.1 instead of α = 0.01; using α = 0.05 instead of α = 0.01

Preparing to Test a Claim about a Population Proportion Answers

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