Question
https://www.statcrunch.com/app/?dataurl=http%3A%2F%2Fwww.statcrunch.com%2Fbooks%2FCQL%2Fdataset%2FFuel_Economy.txt&dlim=tab&ft=true Agency leadership decides to use the vehicle weight data from its random sample of 750 vehicles to estimate the mean vehicle weight of all
https://www.statcrunch.com/app/?dataurl=http%3A%2F%2Fwww.statcrunch.com%2Fbooks%2FCQL%2Fdataset%2FFuel_Economy.txt&dlim=tab&ft=true
Agency leadership decides to use the vehicle weight data from its random sample of 750 vehicles to estimate the mean vehicle weight of all passenger vehicles currently on the road. Construct a90% One-Sample T confidence interval for the mean vehicle weight of all passenger vehicles currently on the
road.
Assume that all necessary Central Limit Theorem conditions for aOne-Sample T confidence interval have been met.
What is the90% lowerlimit?
(Round to two decimal places as needed.)
What is the90% upperlimit?
(Round to two decimal places as needed.)
Using the90% confidenceinterval, would it be plausible to conclude that the mean vehicle weight of all passenger vehicles currently on the road is 2400pounds?
A.No, since 2400 lies outside the constructed confidence interval.
B.Yes, since 2400 lies outside the constructed confidence interval.
C.Yes, since 2400 lies within the constructed confidence interval.
D.No, since 2400 lies within the constructed confidence interval.
Part 4
Compare your90% confidence interval to the95% confidenceinterval, (2484.92,2569.56). Explain which confidence interval is wider and why.
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