A sample of 12 items yields an average weight of $\bar { x }$
= 48.5 grams and a standard deviation of s = 1.5 grams.Assuming weights follow a normal distribution,construct a 90 percent confidence interval for the population mean weight.

Question

A sample of 12 items yields an average weight of $\bar { x }$ 
= 48.5 grams and a standard deviation of s = 1.5 grams.Assuming weights follow a normal distribution,construct a 90 percent confidence interval for the population mean weight.

Quizplus · Accepted Answer

The Answer of A sample of 12 items yields an average weight of $\bar { x }$ 
= 48.5 grams and a standard deviation of s = 1.5 grams.Assuming weights follow a normal distribution,construct a 90 percent confidence interval for the population mean weight.

A Sample of 12 Items Yields an Average Weight Of \bar