8) A soft-drink dispensing machine is said to be out of control if the variance of the contents exceeds 1.15 deciliters. If a random sample of 25 drinks from this machine has a variance of 2.03 deciliters, does this indicate at the 0.05 level of significance that the machine is out of control? Assume that the contents are approximately normally distributed.

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8)
A soft-drink dispensing machine is said to be out of control if the variance of
the contents exceeds 1.15 deciliters. If a random sample of 25 drinks from
this machine has a variance of 2.03 deciliters, does this indicate at the 0.05
level of significance that the machine is out of control? Assume that the
contents are approximately normally distributed.
Transcribed Image Text:8) A soft-drink dispensing machine is said to be out of control if the variance of the contents exceeds 1.15 deciliters. If a random sample of 25 drinks from this machine has a variance of 2.03 deciliters, does this indicate at the 0.05 level of significance that the machine is out of control? Assume that the contents are approximately normally distributed.
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