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
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
1 answer:
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Answer:
The 2 tickets will cost £44.10 after the increase.
Step-by-step explanation:
First, you have to multiply £19.60 by 12.5% to find the increase in the cost of tickets.
Add the price increase to the original cost to find the new cost of each ticket.
Multiply the result by 2 since you have to look for the cost of the 2 tickets.