A random sample of size 10 produced a sample mean equal to 12 and a standard deviation equal to 0.15. Based on this information, the upper limit for a 95% confidence interval estimate is approximately 12.107.

Question

Quizplus · Accepted Answer

The upper limit for a 95% confidence interval estimate is approximately 12.107. This is because the standard error of the mean is 0.15/sqrt(10) = 0.0474, and the critical value for a 95% confidence interval is 1.96. Therefore, the upper limit is 12 + 1.96 * 0.0474 = 12.107.

A Random Sample of Size 10 Produced a Sample Mean