Determine the Z value. Now, you will look at the table for the Z value corresponding to 0.40. I hope these two examples will help you. Questions and Answers for Homework 3 Q9 . I have a difficulty of determining the Null and Alternative hypotheses for the problems of Homework 3.
Null hypothesis is the case that is assumed to be true.
Therefore, Null hypothesis claims the case, when accepted, no action is needed to be taken and no change is required. Therefore, Alternative hypothesis claims the case, when accepted, an action is to be taken and, as a result, some changes may be required. Additionally, if the average income is different from the industry average of 32,000, the company may need to take some action. This fact also indicates that the Alternative hypothesis should be the case that m is different from 32,000. Now you ask yourself to see in which case the organization needs to take some action.