The Diameter of Small Nerf Balls Manufactured at a Factory $\left[ \begin{array} { l l } 5.04 & 5.36\end{array} \right]$

question 34

Multiple Choice

The diameter of small Nerf balls manufactured at a factory in China is expected to be approximately normally distributed with a mean of 5.2 inches and a standard deviation of .08 inches.Suppose a random sample of 20 balls is selected.Find the interval that contains 95.44 percent of the sample means.

• A) \(\left[ \begin{array} { l l }
• 5.04 & 5.36
• \end{array} \right]\)
• B) \(\left[ \begin{array} { l l }
• 5.18 & 5.22
• \end{array} \right]\)
• C) \(\left[ \begin{array} { l l }
• 5.16 & 5.24
• \end{array} \right]\)
• D) \(\left[ \begin{array} { l l }
• 5.07 & 5.33
• \end{array} \right]\)

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