Question

STEPS ON STATCRUNCH A sample of 21 professional football players had a mean weight of 259.6 pounds and standard deviation of 12.1 pounds. A sample of 19 professional basketball players had a mean weight of 205.8 pounds and a standard deviation of 12.9. Find a​ 99% C. I. for​ μ1-μ2 and interpret. Round your answer to 2 decimal places.

confidence interval:

Answer 1

Steps on StatCrunch:

Go to STAT --> T STAT --> Two Sample --> With Summary

Below input need to be added:

The output will be:

Hence,

99% confidence interval will be:

42.99 to 64.61