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4.9.165 Question Help In a study on the physical activity of young adults, pediatric researchers measured...
In a study on the physical activity of young adults, pediatric researchers measured overall physical activity...
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 mu equals 320 cpm and a standard deviation of sigma equals 90 cpm. In a random sample of n equals 100 obese...
In a study on the physical activity of people, researchers measured overall physical activity as the...
In a study on the physical activity of people, 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 people has a mean of μ=322cpm and a standard deviation σ=92cpm. In a random sample of 100 obese people, consider x ̅, the sample mean counts per minute. 1) Which...
Many researchers believe moderate physical activity, such as walking, will help prevent weight gain. To study...
Many researchers believe moderate physical activity, such as walking, will help prevent weight gain. To study this claim, doctors in Colorado has randomly selected patients wear a pedometer to measure the distance walked in miles per week. Based on a sample of 28 individuals, the sample variance of the measurements is 7.66. a. Find a 95% confidence interval for the true variance in distance walked per week. b. What assumption did you make in constructing the confidence interval above?
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