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In a random sample of 100 basketball players, the average vertical jump was 38 inches. Suppose...

In a random sample of 100 basketball players, the average vertical jump was 38 inches. Suppose the standard deviation for all basketball players’ vertical jumps is 10 inches.
a. Determine a 95% confidence interval for the average vertical jump and determine the margin of error.
b. Interpret your result.
c. If you want a margin of error of only 1 inch in the 95% confidence interval, determine the number of basketball players you would need to sample. show all work
Math   Statistics-And-Probability   
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If there is any understanding problem regarding this please feel free to ask any doubt in comment box. Thank you m

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