Mathematics, 22.04.2020 04:59 Madalyngarcia20
Suppose the FAA weighed a random sample of 20 airline passengers during the summer and found their weights to have a sample mean of 180 pounds and sample standard deviation of 30 pounds. Assume the weight distribution is approximately normal.
a.) Find a one sided 95% confidence interval with an upper bound for the mean weight of all airline passengers during the summer. Show you work.
b.) Find a 95% prediction interval for the weight of another random selected airline passenger during the summer. Show you work.
Answers: 3
= 180
= 30
= 1 - 0.95 = 0.05 at 95% confidence level
, is given by
, is given by the formula
, is given by
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Suppose the FAA weighed a random sample of 20 airline passengers during the summer and found their w...
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