The Diameter of Small Nerf Balls Manufactured at a Factory

question 10

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.Calculate the mean of the sampling distribution of the sample mean.

• A)5.2
• B)0.8
• C)0.08
• D)0.018

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