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Question # 3 Perform the following hypothesis test on the paired data below: d = 0 ( Please recall that d is read ~ and also known as ~ Mu-sub-d) HA:...
After
53
68
98
62
67
71
68
96
98
a) Is this an upper tail, lower tail, or two-tail test? (5 points)
b) Are we testing means or proportions? (5 points)
c) State the rule of rejection (in terms of p-value and level of significance) (5 points)
d) Find the p-value (5 points)
e) Should you reject or not reject HO? (5 points)
f) Do the data provide sufficient evidence to suggest the After scores are indeed higher? Why or why not? (5 points)
Note: Because the above is a two-tail test, rejection of Ho alone is not a sufficient reason. Hint: What else did you observe among the sample results?
