that suburb. 6.32 Jeffery, a high school swimmer, swims the 25-yard freestyle with a mean time of 16.43 seconds without using goggles. After his father bought him goggles, Jeffery swam the 25-yard freestyle 15 times. After the 15 swims, Jeffery's mean time was 16 seconds and sample standard deviation was 2 seconds. His father thought the goggles helped Jeffery swim faster. Test his father's hypothesis using a 5% level of significance. Assume that the sample of measurements are from a normally distributed population. 6.30

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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**6.32** Jeffrey, a high school swimmer, swims the 25-yard freestyle with a mean time of 16.43 seconds without using goggles. After his father bought him goggles, Jeffrey swam the 25-yard freestyle 15 times. After the 15 swims, Jeffrey's mean time was 16 seconds and sample standard deviation was 2 seconds. His father thought the goggles helped Jeffrey swim faster. Test his father's hypothesis using a 5% level of significance. Assume that the sample of measurements are from a normally distributed population.
Transcribed Image Text:**6.32** Jeffrey, a high school swimmer, swims the 25-yard freestyle with a mean time of 16.43 seconds without using goggles. After his father bought him goggles, Jeffrey swam the 25-yard freestyle 15 times. After the 15 swims, Jeffrey's mean time was 16 seconds and sample standard deviation was 2 seconds. His father thought the goggles helped Jeffrey swim faster. Test his father's hypothesis using a 5% level of significance. Assume that the sample of measurements are from a normally distributed population.
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