Question

A sample size is 4,3,8,7,7,14,7. The mean is 7.14. What is the 85% confidence interval?

A sample size is 4,3,8,7,7,14,7.

The mean is 7.14.

What is the 85% confidence interval?

Math   Statistics-And-Probability   
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Homework Answers

Answer #1
values
4 9.88 ( 4 - 7.14)2
3 17.16 ( 3 - 7.14)2
8 0.73 ( 8 - 7.14)2
7 0.02  ( 7 - 7.14)2
7 0.02  ( 7 - 7.14)2
14 47.02  ( 14 - 7.14)2
7 0.02   ( 7 - 7.14)2
Total 50 74.86

Mean  

Confidence Interval

S =

S =

S = 3.53

= = = 1.650

Lower Limit = = 7.14 - ( 1.650 * 3.53/ )

Lower Limit = 4.94

Upper Limit =   =   7.14 + ( 1.650 * 3.53/ )

Lower Limit = 9.34

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