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The following data were drawn from a normal population. Find a 94.4% confidence interval for the...

The following data were drawn from a normal population. Find a 94.4% confidence interval for the mean.

20 18 16 17 9 16 7 14 17 7

UCL =

LCL =

Math   Statistics-And-Probability   
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Answer #1

Solution: The 94.4% confidence interval is given below:

is the sample mean and

is the critical value at 0.056 significance level for 9 degrees of freedom and is given below:

is the sample standard deviation and

is the sample size and

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