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Perform each of the following:
a. State the hypotheses and identify the claimb. find the critical valuesc. compute the test valuesd. make the decisionse. summarize the results.
A raincoat manufacturer wants to know whether customers prefer any specific color over other colors in raincoats. He selects a random sample of 50 raincoats sold and notes the colors. The data are shown below.
Color Yellow Red Green BlueNumber Sold 17 13 8 12
At a = 0.10, is there a color preference for the raincoats?
Sam Sleep researcher hypothesizes that people who are allowed to sleep for only four hours will score significantly lower than people who are allowed to sleep for eight hours on a management ability test.
The ground floor of the campus building, what is the probability that at least 3 students selected are undergraduate students?
What does the binomial distribution chart look like? Can I use Excel to come up with this chart?
What is the Bonferroni adjustment? What would the Bonferroni adjustment be for a study with four groups for which a researcher decided to use t-tests?
Sarah is a 60 year old Anglo female in reasonably good health. She wants to take out a $50,000 term life insurance policy until she is 65.
Use regression analysis to investigate the relationship between value and income. Discuss your findings. Use regression analysis to investigate the relationship between value and revenue. Discuss your findings.
Aa mean of 72 mph and a standard deviation of 3 mph. Find the interval that contains the sppeds of 95% of vehicles traveling on this section of i-95.
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
What value is business research and hypothesis testing to a company? How long should it take a company to complete a scientific research study?
The liquid chlorine added to swimming pools to combat algae has a relatively short shelf life before it loses its effectiveness. Records indicate that the mean shelf life of a 5-gallon jug of chlorine is 2,10 hours (90 days).
Blockbuster is testing a new policy of waiving all late fees on DVD rentals using a sample of 10 randomly chosen customers.
Findout the probability using normal approximation for the provided values. Findout the specified probability from a table of Normal probabilities.
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