The mean you found is correct, but the standard deviation is not. Recall that the standard deviation [tex]\sigma_s[/tex] ([tex]s[/tex] for sample) of [tex]n[/tex] points is given by
[tex]\sigma_s=\sqrt{\dfrac1{n-1}\displaystyle\sum_{1\le i\le n}(x_i-\bar x)^2}[/tex]
where [tex]n=10[/tex] is the sample size, [tex]\bar x=3740[/tex] is the sample mean, and [tex]x_i[/tex] are the prices listed in the circled column. So
[tex]\sigma_s=\sqrt{\dfrac{(3640-3740)^2+(7595-3740)^2+\cdots+(3390-3740)^2}{10-1}}[/tex]
[tex]\implies\sigma_s\approx1443.98\approx1444[/tex]
I can't tell if you need to provide any more info beyond this, but given there's a plot of a generalized bell curve, I think you're also supposed to label the plot.
At the center of the bell-shaped/normal distribution is the mean. Notice there are three tick marks to either side of the mean - these are probably supposed to represent prices that fall exactly 1, 2, and 3 standard deviations from the mean. These are, from left to right,
[tex]\bar x-3\sigma_s\approx3740-3(1444)=-592[/tex]
[tex]\bar x-2\sigma_s\approx3740-2(1444)=852[/tex]
[tex]\bar x-\sigma_s\approx2296[/tex]
[tex]\bar x+\sigma_s\approx5184[/tex]
[tex]\bar x+2\sigma_s\approx6628[/tex]
[tex]\bar x+3\sigma_s\approx8072[/tex]
