Test Hypotheses About a Population Proportion
-Listed Below Are the April

Short Answer

Test Hypotheses about a Population Proportion
-Listed below are the April utility bills (in dollars) for one neighborhood. Assuming that the data is normally distributed, test the claim that the standard deviation for the data is $\$ 15$ . Use $\alpha = 0.01$ .
$$\begin{array} { l l l l l l l l l l } 70 & 48 & 41 & 68 & 69 & 55 & 70 & 57 & 60 & 83 \\32 & 60 & 72 & 58 & & & & & &\end{array}$$