Question: When constructing the confidence interval a population mean, assuming the population standard deviation is known, we use the following formula: The table below contains information

When constructing the confidence interval a population mean, assuming the population standard deviation is known, we use the following formula:

The table below contains information about two confidence intervals. Use the given information to determine the missing values:

Round answers accurate to 2 decimal places.

Interval 1

Interval 2Confidence

Level76.20%%Critical Value

(z

a

/

2

za/2

)1.96Sample

Mean117.60Standard

Error8.50Margin of

ErrorLower

LimitUpper

Limit128.69151.46

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