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A department store is considering a new credit policy to try to reduce the number of customers de- faulting on payments. A suggestion is made to discontinue credit to any customer who has been one week or more late with his/her payment at least twice. Past records show 95 percent of defaults were late at least twice. Also, 3 percent of all customers default, and 30 percent of those who have not defaulted have had at least two late payments.
a. Find the probability that a customer with at least two late payments will default.
b. Based on part a, should the policy be adopted? Explain.
A study of 37 graduates of four-year colleges revealed the mean amount owed by a student in student loans was $16,381. The standard deviation of the sample was $1,352. Construct and explain a 90% confidence interval estimate of the population mean am..
Jack weighs 160 pounds and his sister weighs 110 pounds. If themean weight for men his age is 175 with a standard deviation of 14pounds and the mean weight for women is 145 with a standarddeviation of 10 pounds, determine whose weight is closer to "a..
How much of each product do you recommend be produced that you believe maximizes revenue? How much revenue would be made if they followed your recommendation?
What is chance and what role does it play in the use of inferential statistics?
If we draw a random sample of 100 drums from the shipment, what is the probability that the average fill for the 100 drums is between 49.88 gallons and 50.12 gallons?
Write a brief note stating the circumstances under which cusum charting may be preferable to normal Shewart charting methods and calculate the mean of the sample values below, and suggest a suitable value for k, the cusum reference value.
an article that deals with sleep and shift-workers.1.what can you tell us about the journal that this article was
In a regression analysis, a nurse researcher found a correlation of between pain relief scores and satisfaction with nursing care.
One measure of the risk or volatility of an individual stock is the standard deviation of the total return (capital appreciation plus dividends) over several periods of time. Al though the standard deviation is easy to compute, it does not tak..
A researcher would like to know whether there is a consistent, predictable relationship between verbal skills and math skills for high school students. A sample of 200 students is obtained and each student is given a standardized English test and a s..
Select five empirical articles from peer-reviewed journals
Find the mean and standard deviation of the population of all possible sample means when we assume that m equals 6.
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