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charle [14.2K]
3 years ago
8

Suppose the weights of seventh graders at a certain school vary according to a Normal distribution, with a mean of 100 pounds an

d 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 would the P?value tell the researcher in this situation?

a.) the probability that a random sample of students would have a mean of 100 pounds, if the true population mean is 98 pounds

b.) the probability that a random sample of students would have a mean of 98 pounds, if the true population mean is 100 pounds

c.)the probability that a random sample of students would have a mean less than or equal to 100 pounds, if the true population mean is 98 pounds

d.)the probability that a random sample of students would have a mean less than or equal to 98 pounds, if the true population mean is 100 pounds

Mathematics
1 answer:
vesna_86 [32]3 years ago
3 0

Answer:

Please see attachment

Step-by-step explanation:

Please see attachment

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