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The probability that a person in the United States has type O+ blood is 40%. Three unrelated Americans are selected at random. What is the probability that at least two out of the three have blood type O+. (Give answer to 4 decimal places.)
It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests on 128 new cars on the lot." What is the standard deviation for the sample proportion?
consider x1 and x2 given in exercise 3-173 where if x1 and x2 are independent random variables with ex12ex25 vx12 vx210
six hundred draws will be made at random with replacement from the box 0 0 1 . the number of 1s among the draws will be
The standard deviation equaled five days. Assuming that the distribution is normal, what percent of the invoices were paid within 15 days of receipt?
question a researcher has been hired by a pizzeria to determine which type of crust customers prefer. the restaurant
A state meat inspector in lowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled " 3 pounds." Of course, he realizes that the weights cannot be precisely 3 pounds.
Jackie is hired by a book publisher to check the spelling of every word in the latest proof of a history book. With regard to Jackie's assignment, what is the population?
Suppose 31% offer both retirement plans and life insurance as benefits. If a small company is randomly selected, determine the following probabilties:
Why is "rounding-down" the LP solution the suboptimal way to solve Integer programming problems? Can you describe why?
suppose you have data from an experiment with 3 levels of the independent variable. explain why an anova followed by
a population has a standard deviation of 22 units. give your answers correct to two decimal places.a find the standard
An appliance manufacturer claims to have developed a new toaster oven that consumes an average of no more than 250 W. From previous studies, it is believed that power consumption for toaster ovens is normally distributed with a variance of 324 W.
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