A test on world history was given to a group of individuals before and also after a film on the history of the world was presented. The results are given below. We want to determine if the film significantly increased the test scores. (For the following matched samples, let the difference "d" be d = after - before.)
a.Give the hypotheses for this problem.
b.Compute the test statistic.
c.At 95% confidence, test the hypotheses.
Definitions:
Q3: Refer to Exhibit 11-4. The hypothesis is
Q19: Refer to Exhibit 13-9. The coefficient of
Q23: A random sample of 81 students at
Q33: SSE can never be<br>A)larger than SST<br>B)smaller than
Q55: In order to improve the grades of
Q62: A sample of 150 individuals (males and
Q74: If we change a 95% confidence interval
Q81: Three universities administer the same comprehensive
Q131: Refer to Exhibit 10-8. The null hypothesis<br>A)should
Q154: Refer to Exhibit 10-14. The conclusion of