Question

In: Statistics and Probability

25 New York Yankees players from the Major League Baseball, 2016 season, were asked about their...

25 New York Yankees players from the Major League Baseball, 2016 season, were asked about their salaries. They were further classified into pitchers and non-pitchers and the following data on their wages were obtained:

14 pitchers with sample mean = 8,592,211 and sample standard deviation = 8,869,873

11 non-pitchers with sample mean = 8,335,158 and sample standard deviation = 8,969,283

Assume that the population deviations are the same.

to. Considering a significance level of 0.01, can it be concluded that the mean wages between pitchers and non-pitchers are the same? Specify the null and alternative hypothesis as well as the test statistic.

b. Calculate the p-value of the test and conclude in the context of the problem.

c. Determine what type of error is made.

d. Build a confidence interval for the 99% wage difference.

Solutions

Expert Solution

For pitchers

sample size =n1= 14


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