Question
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
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% of the sample means.
A. [5.04 5.36]
B. [5.18 5.22]
C. [5.16 5.24]
D. [5.07 5.33]
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Economics
Authors: Roger A. Arnold
11th edition
1133561675, 978-1133561675
