7. Inference for Quantitative Data(COLON) Means

Setting Up A Test For A Population Mean — Quiz

Test your understanding of setting up a test for a population mean with 5 practice questions.

Practice Questions

Question 1

In a test for a population mean, what is the usual null hypothesis if the claim is that the population mean equals $50$?

Question 2

A student wants to test whether the population mean is greater than $20$. Which alternative hypothesis is correct?

Question 3

Which condition is most important to check before carrying out a $t$ test for a population mean?

Question 4

Why is the $t$ distribution used instead of the $z$ distribution for a test about a population mean when $\sigma$ is unknown?

Question 5

What does the p-value represent in a test for a population mean?