The upper limit of the 90% confidence interval for μ,where n = 64,= 70,and σ = 20,is 74.11

Upper Limit

The highest value that a variable or parameter can assume in a given context.

Confidence Interval

A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter, with a certain degree of confidence.

Standard Deviation

An indicator of the degree of spread or scatter of a collection of numbers, showing the extent to which these numbers differ from their average value.