A stock index has an average historical return of $11$ percent and a standard deviation of $23$ percent. Which range of returns would you expect to see approximately $68\%$ of the time?

Question $5$Answer

a$.$

$-58\mathrm{.}00\%$ to $80\mathrm{.}00\%$

b$.$

$-12\mathrm{.}00\%$ to $34\mathrm{.}00\%$

c$.$

$-46\mathrm{.}50\%$ to $68\mathrm{.}50\%$

d$.$

$-35\mathrm{.}00\%$ to $57\mathrm{.}00\%$

e$.$

$-23\mathrm{.}50\%$ to $45\mathrm{.}50\%$