5601. x̅=14.7, n=53, σ=1.5. Find the confidence interval for the mathematical expectation a of a normally distributed quantitative attribute X of the general population with reliability γ=0.95, knowing the sample mean x̅в=14.7; sample size n=53 and standard deviation σ=1.5.

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