STATISTICS 324        Assignment 11        Due  Apr. 22, 2004

Exercises from the textbook, "Probability & Statistics for Engineering"
by J. Devore

Section 9.1:  2, 6 [e. also compute P-value for test statistic Z obtained
in part (a)]

Section 9.2:  21 (for test statistic T in eq. (9.2), use df v both from
eq. on p. 373, and also simpler, less accurate  v = n_1 + n_2 - 2; compare
results and comment),
23 (for part (c), also use pooled t-test procedure; why does this seem
reasonable -- compare results and comment), 26, 29 (use pooled t-test procedure)

Section 9.3:  36, 40 (also obtain 99% CI for mu_D);    Section 9.4:  48, 52;

Section 9.5:  57,  Extra: For data of Exercise 29, Sec. 9.2, carry out an
F-test, at significance level 0.10, for whether or not the population
standard deviations sigma_1 and sigma_2 for the 2 types of drinks are equal.