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A study is being done on the effectiveness of airbags at saving passengers' lives in car accidents. 11,380 passengers in the study were in a car crash with an airbag. 39 of those passengers were fatally injured. 9743 passengers were in car crashes without airbags. 50 were fatally injured. At the .01 significance level, are airbags successful at saving lives?
Based on your SPSS analysis, report the results using correct APA format. Include results for post hoc tests where appropriate. Your report should include the following:
Draw the statistics as a histogram. Do they resemble the Normal Distribution? Find the median, the average grade and the standard deviation of the two terms.
If a stock has a beta of 1.14 and the expected return on the market is 10 percent, and the risk-free rate is 3.5 percent.
An elevator has a design capacity of 2,560 pounds and a posted limit of 16 passengers. The weight of adults is approximately normal with a mean of 150 pounds and standard deviation of 20 pounds.
After an unusually dry atumn, a radio announcer ia heard to say, "Watch out! We'll pay for these sunny days later on this winter." Explain what he's trying to say, and comment on the validity of his reasoning.
Fitting of simple linear equation - Prepare an equation showing how daily sales are related to number of customers per day.
Arrows. An Olympic archer is able to hit the bull's-eye 80% of the time. Assume each shot is independent of the others.
Technology and the Internet A computer supply store sells a wide variety of generic replacement ink cartridges for printers.
A tractor is attached to a dump car by a cable which makes a horizontal angle of 10° with the track. It requires 1000 N to move the car.
Refer to the given data on distances between seats in business class for various airlines. Find µ, σ, σ2, draw a box plot, and find the mode and any outliers.
Define the standard error of the mean. What happens to the standard error as the sample size increases? Explain
What are the probabilities of accepting lots that are 10 percent, 20 percent, and 30 percent defective? Estimate the probability of accepting a lot that is 15 percent defective.
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