5524. x̅=6.3, n=150, σ=1.25. Find the confidence interval for estimating the expectation a of a normal distribution with reliability γ=0.99, knowing the sample mean x̅=6.3, the sample size n=150, and the general standard deviation σ=1.25

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)