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When 40 people use the Weight Watchers diet for one year, their mean weight loss was = 3.0 pounds. The historical standard deviation is σ = 4.9 pounds (based on data from "Comparison of the Atkins, Ornish, Weight Watchers, 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.
State the test statistic and p-value of your test. Round your answers to four-decimal places.
Explain your conclusion to reject or fail to reject the null hypothesis in terms of p and α.
Interpret your conclusion in the context of this problem
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Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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