Problem 4. Suppose the weights of seventh-graders at a certain school vary according to a Normal...

Problem 4. Suppose the weights of seventh-graders at a certain school vary according to a Normal distribution, with a mean of 100 pounds and a standard deviation of 7.5 pounds. A researcher believes the average weight has decreased since the implementation of a new breakfast and lunch program at the school. She ﬁnds, in a random sample of 35 students, an average weight of 98 pounds.

What is the P-value for an appropriate hypothesis test of the researcher’s claim?

Solutions

Expert Solution

P-Value = 0.0573

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