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At a factory that produces pistons for cars, Machine 1 produced 707 satisfactory pistons and 303 unsatisfactory pistons today. Machine 2 produced 810 satisfactory pistons and 90 unsatisfactory pistons today. Suppose that one piston from Machine 1 and one piston from Machine 2 are chosen at random from today's batch. What is the probability that the piston chosen from Machine 1 is satisfactory and the piston chosen from Machine 2 is unsatisfactory? Do not round your answer.
A die is rolled 180 times. Find the expected number of aces, and the variance for the number of aces. The number of aces will be around___________, give or take_____________ or so. (A die has six faces, all equally likely; the face with one spot i..
a research organization wanted to estimate the average number of hours a college student sleeps per night during the
suppose you wish to test the claim that microis different from 113.9. given a sample of n 218 and a significance of
the heights of 1 year old children are normally distributed with a standard deviation of .75 inches and a mean of 28.3
Their probabilities for success on a single play are p for A and q for B, and successive plays are independent. Determine the probability that A wins the contest given that A plays first.
A large bakery buys flour in 25-pound bags. The bakery uses an average of 4,860 bags a year. Preparing an order and receiving a shipment of flour involves a cost of $10 per order. Annual carrying costs are $75 per bag.
To determine whether this difference is significant, you collect data on the workout preferences for a sample of men and women at your gym.
What is a nonparametric procedure? Describe specifically when you would utilize a nonparametric test. Under what conditions should you use the Wilcoxon sum rank test?
A fair coin was flipped three times and landed heads three times. What is the probability of a head on the next toss?
lakewood fashions must decide how many lots of assorted ski wear to order for its 3 stores. Information on pricing, sales and inventory costs has led to the following payoff table. what decision should be made using minimax regret.
Explain how you would use a manipulation check to determine whether you successfully manipulated room temperature in a study of temperature and aggression.
What is the difference between common causes of variation and special causes of variation?
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