Karamo$$s Shoe Stores Incorporated is considering opening an additional suburban outlet. An aftertax expected cash flow of $$160$ per week is anticipated from two stores that are being evaluated. Both stores have positive net present values.

Site A Site B

Probability Cash Flows Probability Cash Flows

$0\mathrm{.}2$ $ $700\mathrm{.}1$ $ $50$

$0\mathrm{.}21600\mathrm{.}280$

$0\mathrm{.}31700\mathrm{.}2160$

$0\mathrm{.}32100\mathrm{.}4210$

$0\mathrm{.}1230$

Compute the coefficient of variation for each site.

Note: Do not round intermediate calculations. Round your answers to $3$ decimal places.

I get $\mathrm{.}306$ for Site A$.$ which is correct. For Site B i keep getting $\mathrm{.}378$ which is incorrect. Can you help me solve Site B