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The prices (in dollars) for a graphing calculator are shown below for 8 online vendors. Estimate the true mean price for this particular calculator with

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The prices (in dollars) for a graphing calculator are shown below for 8 online vendors. Estimate the true mean price for this particular calculator with 95 % confidence. $\begin{array}{111l}145 & 139 & 131 & 124 150 & 128 & 142 & 136\end{array}$ $130.9

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