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A Study Was Conducted to Assess the Age at Menarche

Question 58

Multiple Choice

A study was conducted to assess the age at menarche among young female gymnasts.  Based on commitment to the sport, gymnasts were divided into two groups: competitive gymnasts and recreational gymnasts. A study was conducted to assess the age at menarche among young female gymnasts.  Based on commitment to the sport, gymnasts were divided into two groups: competitive gymnasts and recreational gymnasts. Assuming that age at menarche is normally distributed, which of the following is closest to the probability that a randomly chosen competitive gymnast will have onset of menarche at age ≥16? A) 0.997 B) 0.950 C) 0.680 D) 0.160 E) 0.025 F) 0.0015 Assuming that age at menarche is normally distributed, which of the following is closest to the probability that a randomly chosen competitive gymnast will have onset of menarche at age ≥16?


A) 0.997
B) 0.950
C) 0.680
D) 0.160
E) 0.025
F) 0.0015

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