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

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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\$ 15 . Use α=0.01\alpha = 0.01 .
7048416869557057608332607258\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}

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