1. Which of the following statements regarding the p-value is *most likely* to be correct?

A. The p-value is the smallest level of significance at which the null hypothesis can be rejected.

B. The p-value is the smallest level of significance at which the null hypothesis can be accepted.

C. The p-value is the largest level of significance at which the null hypothesis can be rejected.

2. Which test should be used for hypothesis related to a single population variance?

A. a chi-square test with degrees of freedom, n.

B. a chi-square test with degrees of freedom, n-1.

C. an F-test with degrees of freedom, n-1.

3. The null hypothesis given below is *most likely* tests:

A. the mean differences

B. a single variance

C. the equality of two variances

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