19. Test hypotheses and understand concepts behind hypothesis testing. Distinguish between statistical and practical significance A. A statistics student heard that an individual's arm span is equal to the individual's height. To test this hypothesis the student used a random sample of 10 students and obtained the following data Student Number 1 2 3 4 5 6 7 8 9 10 Height (in.) 59.5 69 77 59.5 74.5 63 61.5 67.5 73 69 Arm Span (in.) 62 65.5 76 63 74 66 61 69 70 70 Test at a 5% significance level if height and arm span are significantly different. a. What type of hypothesis test is being run? b. Hypotheses c. Test statistic d. P-value e. Final conclusion B. It is believed that 85% of Americans eat salad at least once per week. A nutritionist suspects that the percentage is higher than this. She conducts a random survey of 200 Americans and finds that 171 of them eat salad at least once per week. Use a 0.01 level of significance to test her suspicion. a. Hypotheses b. Test statistic c. P-value d. Final conclusion