Answered

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a cheese merchant looks again at the data set about total cheese sales, in which the sample mean is 164.5 and the sample standard deviation is 103. find the rounded upper level of the 68% confidence interval estimate.

Sagot :

The rounded upper level of the 68% confidence interval estimate is

164.5 ± 3.260.

Given:

a cheese merchant looks a again at the data set about total cheese of sales, in which the sample mean is 164.5 and the sample of standard deviation is 103.

μ = x =164.5

σ = s = 103

n = 987

z score at 68 % :

= 0.9945

Confidence interval CI = x + z * s/[tex]\sqrt{n}[/tex]

= 164.5 + 0.9945 * 103 / √987

= 164.5 ± 3.260

Therefore The rounded upper level of the 68% confidence interval estimate is  164.5 ± 3.260.

Learn more about the confidence interval here:

https://brainly.com/question/24131141

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