SOLUTION: Test the claim that the mean time Americans spend watching TV per day is 4.4 hours at the 0.10 level of significance. A random sample of 80 people had a mean time of 2.225 hours v

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Question 745563: Test the claim that the mean time Americans spend watching TV per day is 4.4 hours at the 0.10 level of significance. A random sample of 80 people had a mean time of 2.225 hours viewing per day and a standard deviation of 1.088 hours.
Answer by stanbon(75887) About Me  (Show Source):
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Test the claim that the mean time Americans spend watching TV per day is 4.4 hours at the 0.10 level of significance. A random sample of 80 people had a mean time of 2.225 hours viewing per day and a standard deviation of 1.088 hours.
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Ho: u = 4.4 hrs (claim)
Ha: u # 4.4 hrs
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z(2.225) = (2.225-4.4)/[1.088] = -1.972
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p-value = 2*normalcdf(-100,-1.972) = 0.049
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Since the p-value is greater than 10%, fail to reject Ho.
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The test results support the claim.
Cheers,
Stan H.
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