Assume the training heart rates of all 20-year-old athletes are normally distributed, with a mean of 135 beats per minute and a standard deviation of 18 beats per minute, as shown in the figure. Random samples of size 4 are drawn from this population, and the mean of each sample is determined. Find the mean and standard deviation of the sampling distribution of sample means.

Then sketch a graph of the sampling distribution.

Transcribed Image Text:

Distribution of Population Training Heart Rates 85 110 135 Rate (in beats per minute) 160 185