Please answer all questions 3A A one tailed left tailed test B one tailed right

Question

Please answer all questions
3A A one tailed left tailed test B one tailed right tailed test or C two tailed test
3B
1 2 3 4 5
(5 boxes, five answers) 3 (22 points total on #3) The average pay for women who have a high-school diploma (iLe. no more education than a high-school diploma) is $520 per week. Suppose you want to determine whether the average pay for all working women is significantly higher than the pay for women with a high-school diploma. The spreadsheet WeeklyPay(modified).xisx in the next tab of this workbook contains data on the pay of 50 working women (some of them have only high-school diplomas, some of them less education than that, some more - we have no information about that in the data). Use the following Null and Alternative Hypotheses for this test: H: s 520 Ho: > 520 What kind of test is this? (2 points) (place an X on the correct choice) a. One-tailed, Left tailed test? One-tailed, Right tailed test? Two-tailed test? b. Based on the data in the spreadsheet, compute.. Perform the calculations on the spreadsheet WeeklyPay. The sample reported on the spreadsheet is all the information we have. Use a significance level a -0.05. Then answer these questions: If we use a citical value test for the null hypothesis, the Rejection rule is: Reject HO It. Do you reject Ho? BONUS QUESTIONS: If we use a p-value test for the null hypothesis, the Rejection rule is: Reject HO If... Do you reject Ho? What is your condusion from these tests?

Explanation / Answer

SOLUTIONa:

Ho:

mu=520

H1:mu>520

its a right tail ttest since greater symbol used

put X ONE TAILED,RIGHT TAILED TEST

solutionb:

t critical value for n-1=50-1=49 df and 0.05/2=0.025 level of significance is

t crit=2.00957

Reject H0 if tcal>2.00957

YES

solutionbii:

Decsion rule

if p<alpha

here alpha=0.05

p<0.05 Reject Ho

if p>0.05 Fail to reject Ho

ANSWERS:if p<0.05 Reject Ho

REJECT HO

REJECT NULL HYPOTHESIS

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