2) In women, calcitonin levels decrease after menopause. A study to examine this was done in 1989 by Reginster et. al. They found the following results in pg/ml (do NOT use R): Before menopause:...

2) In women, calcitonin levels decrease after menopause. A study to examine this was done in 1989 by Reginster et. al. They found the following results in pg/ml (do NOT use R):

Before menopause: 86 104 74 86 86 50 83 71 119 83

After menopause: 42 25 51 72
Use a Mann-Whitney U test. Use α = .01. Do calcitonin levels drop after menopause?