Question

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

Answer 1

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