The upper limit of the 90% confidence interval for μ,where n = 81,= 70,and σ = 20,is 77.33.

Name: The upper limit of the 90% confidence interval for μ,where n = 81,= 70,and σ = 20,is 77.33.
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To find the upper limit of a 90% confidence interval for the mean (μ), we use the formula: mean + (Z * (σ/√n)). Here, Z for 90% confidence is 1.645. Calculating gives 70 + (1.645 * (20/√81)) = 73.65, not 77.33.

The Upper Limit of the 90% Confidence Interval for μ,Where