arianna4017
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The weights of ice cream cartons are normally distributed with a mean weight of 12 ounces and a standard deviation of
0.7 ounce.
(a) What is the probability that a randomly selected carton has a weight greater than 12.25 ounces?
(b) A sample of 16 cartons is randomly selected. What is the probability that their mean weight is greater than 12.25
ounces?

Sagot :

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