The distribution of weights for an industrial part appears to follow a normal distribution. You randomly...

The distribution of weights for an industrial part appears to follow a normal distribution. You randomly selected 21 parts from a large batch of those parts, and determined the sample standard deviation = 4 g. If you want to test H0: σ2 = 16 versus Ha: σ2 ≠ 16, what is the absolute value of the test statistic you would use?

Expert Solution

The test statistic = (n - 1)s²/

= 20 * 4^2/16

= 20

orchestra answered 2 years ago

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