Current Attempt in Progress

The expected value of a normal distribution of prices for a stock is $$51.$ If you are $90$ percent sure that the price of the stock will be

between $$36$ and $$66\mathrm{.}00,$ then what is the variance of the stock price? $($Round answer to $3$ decimal places, e$.$g$.52\mathrm{.}750.)$

Variance of stock price $

Attempts: $0$ of $1$ used