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April 25, 2015

Homework Help: statistics

Posted by Ana on Tuesday, February 25, 2014 at 5:31pm.

Suppose a manufacturer claims that each family-size bag of pretzels sold weighs 12 ounces on average with a standard deviation of 0.8 ounces. A consumer's group decides to test this claim. If a simple random sample of 49 bags of pretzels gives a sample mean of 11.8 ounces, is this significant evidence that the actual weight of a bag of pretzels is different from the manufacturer's claim?
(a) State the hypothesis.
(b) Describe and draw the corresponding sampling distribution.

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