Question

also find p value.

During the winter of 2008-2009, the average ulity bil for nesidents of a cetai sample standand deviation of $22 02 Complete parts a and b below Determine the hypotheses OA Ho' μ2176 and H' : P<176 OC. Ho: μ 176 and HcF-176 OD, Ho : μ s 170 and H, : μ>176 Debermine the ortical values) (Round t Determine the est statistc to three decimal places as needed. Use a comma to separate answers as needed) Round to two decimal places as needed) What conclusion should be draan? O A. Reject Ho There is not suflicient evidence to conclude that the average ulity bill in tis state was lower in the winter of 2009 2010 than iwas in the winter of 2008-2009 ○ B. Donot miectMy There is "ot suffoent evidence to cond de that the average utity bar, this state was ower nthe wrter of 2009-2010 than was in the wine, of 20002009. O c. Raject Ho There is sufficient evidence to conclude that the average uilty bill in this stabe was lower in the winter of 2009-2010 than t was in the winter of 2008-2009 O o. Do not reject Ho. There is sutficient evidence to condlude that the average usity bill in this state was lower in the winter of 2009-2010 than it was in the winter of 2008-2009 b)Does charg ng tho value of α tom, 0 05to0.01 afect your oondusion? Why or why nor? O A Yes, the conclusion changes. There is sufficient evidence to reject H 。B. Yes, ho condusion charge. Thero nt sufcert evidence to reject he

Answer 1

from above

a)

option A is correct

crtiical value = -1.699

test statistic tx = -2.47

p value =0.010

Conclusion: option C

b) please revert if only 2 options are available