Answer Happy

A sample of non-English majors at a selected college was used in a study to see if the student retained more from reading a 19 th- century novel or by watching it in DVD form. Each student was assigned one novel to read and a different one to watch , and then they were given a 20-point written quiz on each novel. Assume the variables are normally distributed. The test results are shown below. 90 Book 88 73 91 85 93 95 90 90 80 DVD 80 95 95 92 93 80 92 75 70 80 At a = 0.10, can it be concluded that the book scores are higher than the DVD scores? (Consider the difference D= Before - After) a) State the hypotheses and identify the claim with the correct hypothesis. 01. Ho:PD =0 Not claim H1:HD 0 claim 02. Ho:HD20 Not claim H:HD <0 claim

O 1. Ho:PD =0 Not claim H:Hp 0 claim O 2. Ho:PD20 Not claim H1:Pp <0 claim 3. Ho:HD <0 Not claim H1:MD >claim b) Find the critical value (s). 1. CV=1.383 2. CV= 1.833 3. CV= -2.262

c) Compute the test value: O 1.t= 0.235 O 2. t=0.626 3. t= 0.988 d) Make the decision. 01. Reject the null hypothesis. 2.Do not reject the null hypothesis. e) Summarize the results. 1. There is enough evidence to support the claim. 2. There is not enough evidence to support the claim.