Suppose the weights of seventh-graders at a certain school vary according to a Normal distribution, with a mean of 100 pounds What would the \( P \)-value tell the researcher in this situation? 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 the probability that a rand lunch program at the school. She finds, in a random sample of 35 students, an average weight of 98 pounds. 100 pounds the probability that a random sample of students would have a mean of 98 pounds, if the true population mean is a mean of 100 pounds, if the true population mean is 98 pounds the probability that a random sample of students would have a mean less than orequal to 100 pounds, if the true population mean is 98 pounds
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The \( P \)-value in this context indicates the probability of observing a sample mean of 98 pounds or lower from a group of seventh-graders, assuming that the actual mean weight of the population is 100 pounds. A lower \( P \)-value would suggest that such a sample mean is unlikely to occur under the null hypothesis, potentially indicating an issue with the assumed mean weight. If the researcher finds a \( P \)-value less than the chosen significance level (commonly 0.05), this would suggest there is enough evidence to reject the null hypothesis that the mean weight is 100 pounds, implying that there might be a significant difference in the average weight of seventh-graders at the school. This could prompt further investigation into factors affecting student weights, such as dietary habits or lifestyle changes.