ayoismeisjjjjuan
05.05.2020 •
Mathematics
Weights of women in one age group are normally distributed with a standard deviation σ of 18 lb. A researcher wishes to estimate the mean weight of all women in this age group. Find how large a sample must be drawn in order to be 90 percent confident that the sample mean will not differ from the population mean by more than 2.0 lb.
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Ответ:
68, 70, 72, 78, 80, 81, 84, 86, 88, 94, 95, 99, 100
Minimum: 68
Maximum: 100
Median: 84
1st quartile: {68, 70, 72, 78, 80, 81}
3rd quartile: {86, 88, 94, 95, 99, 100}