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Is the Diet Practical? When 40 people used the Weight Watcher diet for one year, their mean weight loss was 3.0lb and the standard deviation was 4.9 lb (based on data from "Comparison of the Atkins, Ornish, Weight Watcher, and Zone Diets for Weight Loss and Heart Disease Reduction, "by Dansinger, et. al, Journal of the American Medical Association, Vol. 293, No. 1). Use a 0.01 significance level to test the claim that the mean weight loss is greater than 0 lb.
The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.
the machining center at a production facility has three lathes of differing ages and thus precision. the oldest machine
you are in charge of resucing the water consumption in a dormitory at a university and thus have been charged with
use example posted in this week lectures section to estimate population proportion. sample proportion is ps 0.48
a study of religious practices among college students interviewed a sample of 245 students 157 of whom stated they pray
3 voters are randomly selected (with replacement) from a group of 1,500 people. The group is known to be 20% republican. What is the probability that all of them are republicans?
a recent article reported that there are approximately 11 minutes of actual playing time in a typical national football
What percent of healthy young adults has osteoporosis by the WHO criterion? Suppose that the standard deviation is the same as for young adults. What percent of this older population has osteoporosis?
Calculate the lower limit of a 95 percent confidence interval for the population mean audit delay for all public manager-controlled companies in New Zealand.
Show the sampling distribution of p and what is the probability the Times/CNN poll will provide a sample proportion
four automobiles have entered bubbas repair shop for various types of work ranging from a transmission overhaul to a
If a sample of 800 homes sold in 2004 is obtained what is the probability that between 175 & 200 homes are going to be investment?
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