Consider the following information on the Market's return given below.

a$.$ What is the expected return?

b$.$ What is the standard deviation?

c$.$ If the distribution is normal, $95\%$ of the time the return should fall within what range?

$\backslash$table$[[$State of the Economy,$\backslash$table$[[$Expected Return$],[$on the Market $(\%)]],$Probability$],[$Recession$,-4\%,\mathrm{.}25],[$Stable$,2\%,\mathrm{.}50],[$Expansion$,+7\%,\mathrm{.}25]]$