Mathematics, 11.12.2019 17:31 amusgrave2775

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 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

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Suppose the weights of seventh? graders at a certain school vary according to a normal distribution,...

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