Question

In a study on the physical activity of young​ adults, pediatric researchers measured overall physical activity as the total number of registered movements​ (counts) over a period of time and then computed the number of counts per minute​ (cpm) for each subject. The study revealed that the overall physical activity of obese young adults has a mean of μ=320 cpm and a standard deviation of σ=90 cpm. In a random sample of 100 obese young​ adults, consider the sample mean counts per​ minute. What is the probability that the mean overall physical activity level of the sample is between 300 and 310​ com? Round your final answer to four decimal places as needed.

Answer 1