If n=13, ¯(x-bar)=47, and s=2, construct a confidence interval at a 99% confidence level. Assume the...

If n=13, ¯(x-bar)=47, and s=2, construct a confidence interval at a 99% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place

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Expert Solution

We have given that,

Sample mean =47
Sample standard deviation =2
Sample size =13
Level of significance=1-0.99=0.01
Degree of freedom =12

t critical value is (by using t table)=   3.055

Confidence interval formula is

=(45.3,48.7)


Lower confidence limit=   45.3

Upper confidence limit=   48.7

orchestra answered 1 year ago

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