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Computing the Z scores for the given data.
For a normal distribution, find the z-score value that separate the middle 90% of the distribution from the 10% in the tails.
If a 99% confidence interval is calculated to estimate the difference between the average hourly rates for each type of graduate, what is the margin of error? Assume both population standard deviations are equal.
The heights in inches of 18 randomly selected adult males in LA are listed as: 70, 69, 72, 57, 70, 66, 69, 73, 80, 68, 71, 68, 72, 67, 58, 74, 81, 72. Display the data in a stem-and-leaf plot.
Construct a 95% confidence intervalfor the population proportion of positive drug tests. Why is the normality assumption not a problem despite the very small value of p?
Line up for a family photo, with the condition that the youngest child is in the centre, how many distinguishable arrangements are there?
Find the probability that you will (a.) make your first sale on your fifth call, (b.) make your sale on the first, second or third call, and (c.)do not make a sale on your first three calls.
Design a calculator simulation to estimate the probability described in (a). Describe your simulation method clearly enough so that a classmate could carry it out without further explanation from you.
There is an operator at the center who places 25 outgoing calls in a one-hour period. What is the probability that this operator will get live answers on 7 or more calls?
Given a binomial distribution with n=29 and p=0.83, would the normal distribution provide a reasonable approximation? Why or why not.
At the .10 significance level you will test to determine if there has been an increase in selling time. What is your decision?
The following represents a project that should be scheduled using CPM. What is the probability of completing this project within 16 days?
Susan Williams has been the production manager of Medical Suppliers, Inc., for the past 17 years. Medical Suppliers, Inc., is a producer of bandages and arm slings.
Develop a mathematical programming model and solve. Discuss your results [total profits, total costs, etc].
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