Question number $15.$

mean $=184\mathrm{.}50,$ standard deviation $=0\mathrm{.}0256$

mean $=184\mathrm{.}50,$ standard deviation $=0\mathrm{.}0007$

mean $=0\mathrm{.}82,$ standard deviation $=0\mathrm{.}5656$

mean $=0\mathrm{.}82,$ standard deviation $=0\mathrm{.}0256$

mean $=0\mathrm{.}82,$ standard deviation $=0\mathrm{.}0007$

None of the above