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Question: Dorsey Distributors has an annual demand for a metal detector of 1,400. The cost of a typical detector to Dorsey is $400. Carrying cost is estimated to be 20% of the unit cost, and the ordering costis $25 per order. If Dorsey orders in quantities of 300 or more, it can get a 5% discount on the cost of the detectors. Should Dorsey take the quantity discount?
You have been asked to justify the use of a balanced RSS as opposed to an SRS of the same size to obtain information about a population. Discuss the pros and cons of these two approaches to data collection.
the time it takes to process phone orders in a small gift shop is normally distributed with a mean of 6 minutes and a
One variable recorded is the count X of finish defects (dimples, ripples, etc) in the car's paint. Is it reasonable to use a binomial distribution?
Use a computer to simulate the numbers drawn for the Cash 5 lottery game 1000 times, and draw a histogram for the values of H = highest number drawn. Compare your histogram to the one shown in given Figure.
imagine that a student takes a 20-item multiple choice exam. she didnt study so all of her answers are guesses. each
Pisano et al (2005) studied the "diagnostic performance of digital versus film mammography for breast cancer screening." About 40,000 women participated in the trial; each subject was screened by both methods.
If we combine them, considering the overall group to be one larger random sample, what is a 95% confidence interval for the proportion of the general public that thinks the death penalty is being fairly applied?
Conduct a hypothesis test to determine whether the average life expectancy of female Bostonians is higher than that of male Bostonians. Test at the 10% significance level. Run both a critical value and p-value test
at a convenience store the amount of money customers spend has a right -skewed distribution with mean 6.42 and standard
If the analyst finds evidence that the boast of dealership A is correct. What will be your critical value? What is the value of the test statistic? the boast of dealership A is correct?
Make a Normal quantile plot and discuss whether the natural tolerances you found in the previous exercise are trustworthy.
Provide 10 numeric values your profession (ages of criminals, test scores, blood pressure of patients, etc.) or personal life (ages of family members, recent bowling scores, randomly chosen 3-digit numbers, etc.) and find the mean, median, and mod..
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