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1. A factory arranges different portions of its assembly lines in an attempt to insure that all jobs take an equal amount of time for completion. Periodically they check these completion times by conducting independent surveys. The A Line was sampled 30 times and showed an average completion time of 20 minutes with a standard deviation of 2.5 minutes. The B Line was sampled 35 times and showed an average completion time of 26.5 minutes with a standard deviation of 1.6 minutes. At the ninety five percent confidence level, does this data support the belief that both routes in the city take an equal time to complete? Conduct a hypothesis test to determine if this assumption is correct.
Why is such information important to the business?
the average weight of adult men is 181 pounds with a standard deviation of 40 pounds.thirty five 35 men were asked
According to Nielsen Media Research, the average number of hours of TV viewing per household per week in the United States is 50.4 hours.
An experimental bumper was designed to reduce damage in low-speed collisions. This bumper was installed on an experimental group of vans in a large fleet, but not on a control group.
What is the minimum sample size needed to estimate the population mean salary of a company at 95% confidence with a margin of error of $1,500?
Is there sufficient evidence to indicate that the mean annual percentage turnover for U.S. plants exceeds the corresponding mean percentage for Japanese plants?
Provide an explanation of a chi-square test. Why would you use the chi-square statistic? What type of data is used with chi square analysis?
An airline owns an aging fleet of Boeing 737 jet airplanes. It is considering a major purchase of up to 17 new Boeing model 757 and 767 jets.
Find the probability that the j-tuple selected contains at least one 1 - Find the size of the sample space.
In the previous exercise you analyzed the association between the amounts of fat and sodium in fast food hamburgers. What about fat and calories?
The mini literature paper will focus on a short story, The Lottery by Shirley Jackson. This short essay is to expose you to MLA documentation and writing about literature. The following are the guidelines you should follow in drafting your paper:
A certain disease occurs in 35% of the population. A test for the disease is fairly accurate: it misclassifies people with the disease as healthy 6% of the time and reports that a healthy person is diseased just 7% of the time.
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