Question

2) As part of a larger study of the effects of strenuous exercise on human fertility and fecundity, the ages (in years) of menarche (the beginning of menstruation) for 10 Olympic female endurance athletes (runners and swimmers) who had vigorously trained for at least 18 months prior to menarche were recorded.

13.6​13.9​14.0​14.2​14.9​15.0​15.0​15.1​15.4​16.4

a) Calculate the following descriptive statistics: sample mean, variance, standard deviation, and median

b) Do you feel that the sample mean is significantly higher that the overall population mean for nonathletes of 12.5 years? Provide a rationale for your answer.

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Answer 1