5603. x̅=15.8, n=58, σ=3.7. 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=15.8; sample size n=58 and standard deviation σ=3.7.

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