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your organization has a goal of 15 days for the average processing of a purchase request (PR) from notification to final approval. they are only concerned if it takes longer than 15 days. a sample of 25 PRs produced a mean of 15.5 days and a standard deviation of 1.5 days. test at the 10% level of significance whether they are meeting their goal.
A study on body types gave the following results: 45% were short; 25% were short and overweight; and 24% were tall and not overweight.
The Martin Company is in the process of planning for new production facilities and developing a more efficient distribution system design. At present, it has one plant at St.Louis with a capacity of 30000 units.
Assuming that this procedure yields a binomial distribution, find the mean and the standard deviation for the number of households in this sample who have cable TV.
suppose a geyser has a mean time between eruptions of 94 minutes. let the interval of time between the eruptions be
a large manufacturing firm tests job applicants. test scores are normally distributed with a mean of 500 and a standard
Based on the genotypes of parents, offspring are expected to have genotypes distributed in such a way that 25% have genotypes denoted by AA, 50% have genotypes denoted by Aa
emily is interested in understanding if there is a relationship between whether or not people think the diversity
a student takes a calculus midterm and a history midterm. the mean and standard deviation on the calculus midterm are
What is an appropriate sample space for this experiment?
What is the average time that catalog customers must wait before their calls are transferred to the order clerk? (b) What is the average number of callers waiting to place an order?
compare the standard deviation for the heights of males which 4.21 and the standard deviation for the heights of
The manufacturer of a coffee dispensing machine claims the ounces per cup is normally distributed with population mean equal to 8 ounces and standard deviation equal to 0.9 ounces. If 50 cups of coffee were measured, what is the possibility that- ..
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