Mathematics, 27.02.2020 22:57, BigCra
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 (International Journal of Obesity, January 2007). The study revealed that the overall physical activity of obese young adults is skewed right with a mean of µ = 320 cpm and a standard deviation of σ = 100 cpm. In a random sample of n = 100 obese young adults, consider the sample mean counts per minute, ¯x.
(a) Describe the sampling distribution of ¯x making sure to comment on all relevant features including its mean, standard error, and shape.
(b) What is the probability that the mean overall physical activity level of the sample is between 300 and 310 cpm?
(c) What is the probability that the mean overall physical activity level of the sample is greater than 360 cpm?
Answers: 2
Mathematics, 21.06.2019 17:10, jonathan3191
Empty box + box + empty box fill in the box is equal to 30 how
Answers: 2
Mathematics, 21.06.2019 18:30, nickname0097
Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?
Answers: 1
Mathematics, 21.06.2019 21:00, newsome1996p4ggft
5x−4≥12 or 12x+5≤−4 can you with this problem
Answers: 3
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