This lesson looks at a hypothesis test for one proportion in a problem about Snapchat use among teenagers. Includes downloadable study guide with exercises - guide also covers other topics. [11:34]

Do you know how close your predictions were to the actual value? This video will review over examples of both t-tests and z-tests to explain how critical values and p values are different ways of telling the same statistical information....

This lesson will implement a z-test for a population mean to help determine if adults in Minneapolis are exercise more than the national average, which is 2 hours per week. Student watch a video tutorial.

This lesson will implement a z-test for a population proportion to help determine if there is a difference in M&M color ratios between actual store bought bags of M&Ms and what the Mars Co. claims are the actual ratios. Student...