The weight of a product is measured in pounds.A sample of 50 units is taken from a batch.The sample yielded $\bar { X }$ = 75 lbs. ,and we know that ?² = 100 lbs.Calculate a 95 percent confidence interval for ?. A) $[ 71.25$$ \quad$$ \quad$$78.75 ]$ B) $[ 72.23$$ \quad$$ \quad$77.77] C) $\left[ \begin{array} { l l } 47.28 & 102.72 \end{array} \right]$ D) $\left[ \begin{array} { l l } 72.67 & 77.33 \end{array} \right]$

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The Answer of The weight of a product is measured in pounds.A sample of 50 units is taken from a batch.The sample yielded $\bar { X }$ = 75 lbs. ,and we know that ?² = 100 lbs.Calculate a 95 percent confidence interval for ?. A) $[ 71.25$$ \quad$$ \quad$$78.75 ]$ B) $[ 72.23$$ \quad$$ \quad$77.77] C) $\left[ \begin{array} { l l } 47.28 & 102.72 \end{array} \right]$ D) $\left[ \begin{array} { l l } 72.67 & 77.33 \end{array} \right]$

The Weight of a Product Is Measured in Pounds Xˉ\bar { X }Xˉ

The Weight of a Product Is Measured in Pounds $\bar { X }$