Question 1

What is the first step in hypothesis testing?

Accepted Answer

Formulate the null and alternative hypotheses.

Answer

Select an appropriate test statistic and procedure.

Answer

Choose the level of significance (α) and establish the rejection region.

Answer

Compute the value of the test statistic from the sample data.

Question 2

If the critical value falls in the non-rejection region, then the null hypothesis ______.

Accepted Answer

cannot be rejected

Answer

cannot be determined

Answer

is rejected

Answer

is restated

Question 3

Calculate the z-value given the following: hypothesis test on population mean; x̅= 57; μ = 63; σ = 2; n = 45.

Accepted Answer

-20.12

Answer

-0.19

Answer

0.19

Answer

20.12

Question 4

Calculate the t-value given the following: hypothesis test on population mean; x̅= 35; μ = 33; s = 5; n = 25.

Accepted Answer

2

Answer

-0.18

Answer

0.18

Answer

-2

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