One home run percentage it the number of home runs per 100 times at bat A random

Question

One home run percentage it the number of home runs per 100 times at bat A random sample of 43 professional baseball players gave the following data for home percentages (a) Use a calculator with mean and standard deviation keys to find x and s. (b) Compute a 90% confidence inlets al for the population mean mu of home run percentages for all professional baseball players. (c) Compute a 99% confidence interval for the population mean mu of home ran percentages for all professional baseball players (Round your answers to two decimal places.) lower limit % upper limit %

Explanation / Answer

mean x=2.2930

s=1.401

b) given n=43, z=1.645

2.2930+/- 1.645*1.401/sq.root 43

2.2930+/- 0.351

1.942,2.644

c)n=43, z=2.575

2.2930+/- 2.575*1.401/sq.root43

2.2930+/-0.550

1.743,2.843

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