Statistics

Statistics

solve the case study according to the formula given at the end
see the attached file for the case and the formula in the same file

A diet doctor claims that the average North American is more than 20 pounds overweight. To test his claim, a random sample of 10 pounds overweight American was weighted. And the difference between their actual and ideal weight was
calculated. The data are listed here.

16

23

18

41

22

18

23

19

22

15

1- Do these data allow us to infer at the 5% that the doctor’s claim is true?

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