![]() Calculate the percentage of women in your sample who became pregnant. b) In your sample of 200, 14 women became pregnant in the past year, while taking the pill. Imagine a random sample of 200 medical records of women who were prescribed the pill one year ago. (research published in Family Planning Perspectives in 2001 cited in Baldi and Moore, 3rd ed, p 334) a) Calculate the mean and standard deviation for the proportion of women who experience unplanned pregnancies. This means that 5% of women taking the pill for a year will experience an unplanned pregnancy in that year. ![]() Under typical use the real efficacy is about 95%. Pharmaceutical companies claim/advertise that "the" birth-control pill is extremely effective.
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