Question

# A study of 50 teenagers revealed that the average number of times I thought about food...

A study of 50 teenagers revealed that the average number of times I thought about food in one day was 100 times with a standard deviation of 10 develop a 95 percent confidence interval of the mean time is teenagers think about food in one day

Result:

A study of 50 teenagers revealed that the average number of times I thought about food in one day was 100 times with a standard deviation of 10 develop a 95 percent confidence interval of the mean time is teenagers think about food in one day.

95% Table value t at 50-1 = 49 DF =2.0096

=(97.1580, 102.8420)

 Confidence Interval Estimate for the Mean Data Sample Standard Deviation 10 Sample Mean 100 Sample Size 50 Confidence Level 95% Intermediate Calculations Standard Error of the Mean 1.414213562 Degrees of Freedom 49 t Value 2.0096 Interval Half Width 2.8420 Confidence Interval Interval Lower Limit 97.1580 Interval Upper Limit 102.8420

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