Statistics and Probability Review

What is the critical value when the test is left-tailed, ∝=0.1, the variance is unknown and n=17?

What is the appropriate test if the sign of the alternative hypothesis is ≠?

We only use the = for null hypothesis.

We will reject the null hypothesis if the value of test statistics falls in the rejection region.

What test statistic is used when the sample size is greater than or equal to 30? (n≥30)

Alternative hypothesis is also called the initial claim.

What do you call the subset or a portion of a population?

What do you call the set of all people, objects, or ideas you want to investigate?

What is the appropriate test if the sign of the alternative hypothesis is <?

We have four types of hypothesis.