1-Suppose you want to redesign test to have 95% power but you didn't want to change the effect size of the significant level. Would you have to increase or decrease the sample size.2-of the significance level of the test was changed to 0.01, would the shaded darker area on the right bottom (Ha) graph labeled 0.13 increase, decrease or stay the same?

A researcher wanted to use hypothesis testing to support the claim that mean hours worked per week in retail stores has dropped from five years ago, when the mean was 24. A sample size of 50 will be selected for this test. A diagram of the design of this test is shown to the right. Reject Ho FTR Ho 04 20 24 -13 18