1. Suppose the distribution of systolic blood pressure in the general population is normal with a mean of 130 mm Hg and a standard deviation of 20 mm Hg. 1.1 In a special subgroup of 85 people with glaucoma, we find that the mean systolic blood pressure is 135 mm Hg. Test for an association between glaucoma and highblood pressure. [Hint: Test the mean]1.2 Answer Problem 1.1 with sample variation of 22 mm Hg and without assumption concerning the standard deviation. [Hint: use t-test instead of z-test when standard deviation is unknown]2. As part of the same program, eight 25–34-year-old females report an average daily intake of saturated fat of 11 g with standard deviation = 11 g while on a vegetarian diet. If the average daily intake of saturated fat among 25–34-year-old females in the general population is 24 g, then, using a significance level of .01, test the hypothesis that the intake of saturated fat in this group is lower than that in the general population. Compute a p-value for the hypothesis test. 3. Suppose s = 5 based on a sample of 20 subjects. Test the null hypothesis H0 : σ 2 = 16 versus Ha : σ 2 ≠ 16 using the critical-value method based on a significance level of .05. What is the p-value? Compare the mean level of linoleic acid in the vegetarian population with that of the general population under this hypotheses to report a p-value.