Your local gas company is interested in estimating the average usage during the month of January. A random sample of 1280 households found the following results: X= 82 therms and s=28 therms. Conduct a test of hypothesis to determine if the average amount exceeds 80 therms. Use a=0.02.

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Your local gas company is interested in estimating the average usage during the month of
January. A random sample of 1280 households found the following results: X= 82 therms and s=28
therms. Conduct a test of hypothesis to determine if the average amount exceeds 80 therms. Use
a=0.02.
Transcribed Image Text:Your local gas company is interested in estimating the average usage during the month of January. A random sample of 1280 households found the following results: X= 82 therms and s=28 therms. Conduct a test of hypothesis to determine if the average amount exceeds 80 therms. Use a=0.02.
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