Question 5Construct a 98% confidence interval estimate for the population mean giventhe following values:
(113.13, 126.87)(113.67, 126.33)(117.46, 122.54)(113.41, 126.59)
Correct!
3.33 / 3.33 ptsQuestion 6A hospital emergency room has collected a sample of n=40 to estimate themean number of visits per day. It has found the standard deviation is 32.Using a 90 percent confidence level, what is its margin of error?
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Question 7
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Chap 8 Graded HW: OIS 2340090 Summer 2015 Business Statistics
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The produce manager for a large retail food chain is interested in estimatingthe percentage of potatoes that arrive on a shipment with bruises. A randomsample of 150 potatoes showed 14 with bruises. Based on this information,what is the margin of error for a 95 percent confidence interval estimate?
3.33 / 3.33 ptsQuestion 8At issue is the proportion of people in a particular county who do not havehealth care insurance coverage. A simple random sample of 240 people wasasked if they have insurance coverage, and 66 replied that they did not havecoverage. Based on these sample data, determine the 95% confidence intervalestimate for the population proportion.
3.33 / 3.33 ptsQuestion 9Most major airlines allow passengers to carry two pieces of luggage (of acertain maximum size) onto the plane. However, their studies show that the
8/23/2015
Chap 8 Graded HW: OIS 2340090 Summer 2015 Business Statistics
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more carry

on baggage passengers have, the longer it takes to unload and
load passengers. One regional airline is considering changing its policy to
allow only one carry

on per passenger. Before doing so, it decided to collect
some data. Specifically, a random sample of 1,000 passengers was selected.
The passengers were observed, and the number of bags carried on the plane
was noted. Out of the 1,000 passengers, 345 had more than one bag.
Based on this sample, develop and interpret a 95% confidence interval
estimate for the proportion of the traveling population that would have been
impacted had the one

bag limit been in effect.
(0.3336, 0.3564)
(0.3216, 0.3684)
(0.3220, 0.3680)
(0.3155, 0.3745)
Correct!