Assume that the mean weight for American men in their twenties is 180 pounds with a standard deviation of 25 pounds.  You decide to conduct a study to determine whether the weight of men enrolled at UWM differs from the population of twenty-year-old men in general.  Suppose you sample 100 UWM men and find that the mean weight of this sample is 175 pounds.  You use a two-tailed test (α = .05) to test your research question (Is the weight of UWM men significantly different from the general population of men in their twenties?) Develop a Null and Alternative hypothesis regarding this sample : Is the weight of UWM men significantly different from the general population of men in their twenties? Sketch out the normal curve to demonstrate how you drew this conclusion.  (Hint:  You need to solve for σM before you can compute your z-score!)

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A: L

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.