Question

3. There is a different t distribution for every hypothetical sample size.

True or False

2. For a chi-square test, if the observed number of cases in your sample fits what you expect given your knowledge of the population, you would reject the null hypothesis.

True or False

1. A two-tailed hypothesis will have more statistical power than a one-tailed hypothesis.

True or False

Answer 1

3] TRUE :

EXPLANATION: The sample size for a t-test determines the degrees of freedom for that test, which specifies the t-distribution. The overall effect is that as the sample size decreases, the tails of the t-distribution become thicker.

2] FALSE

EXPLANATION: WE WILL REJECT THE NULL HYPOTHESIS ONLY AFTER THE TEST.

1] FALSE

EXPLANATION: One-tailed tests have more statistical power to have an effect in one direction than a two-tailed test with the same sample size and significance level.