Question

1.Clearlystate the null and alternative hypotheses2

.Sketcha graph of the rejection region labeled with the criticalvalue(s)

3.Calculatethe test statistic (showing all workto earn any credit)and p-value(give a range of values for t, chi-square, and Fdistributions)

4.Write conclusion (3 sentences)

1.The summary statistics for a group of online test takers and normal(paper and pencil) test takers appear below.

Group	n	X BAR	S
Online	35	185	40
Normal	31	160	38

Conduct a two sample t-test to determine at α= .05 with df=63ifonline tests take significantly more time to complete than normal paper and pencil tests?

Answer 1

1.

2.

3.

0.005<P-value<0.01 (using Normal table)

4. Conclusion : Using graph, we reject H0.

That is, there is sufficient evidence to conclude that online tests take significantly more time to complete than normal paper and pencil tests.