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A marketing research firm advises a new client that approximately 15% of all persons sent a sweepstakes offer will return the mailing. Suppose the client sends out 10.000 sweepstakes offers.
a. What is the probability that fewer than 1,430 of the mailings will be returned?
b. What is the probability that more than 1,600 of the mailings will be returned?
State two possible explanations for this occurrence. Which explanation do you think is more reasonable? Why?
A company is interested in offering its employees one of two employee benefit packages. A random sample of the company's employees is collected.
Medicine and Clinical Studies Brigham and Women's Hospital reports that approximately 20% of American males and 10% of American females.
Plasma glucose levels are used to determine the presence of diabetes. Suppose the mean in (plasma-glucose) concentration (mg/dL) in 35-44 year olds is 4.86 with standard deviation = 0.54.
suppose that the scores of golfers on the pga tour have a mean of 67.15 and a standard deviation of 3.084. a random
the following games are played with 8 cards the four kings and the four aces. the dealer fans the cards with their back
If the cost in millions of dollars, to remove x% of pollution in a lake modeled by C=6000/200-2x, how would I figure the cost to remove 75% of the pollution?
Administrative staff based at a business school in the UK are advised to take a 15 minute break from their personal computer after working on it for 90 minutes continuously. A random sample of 36 staff revealed that, one average a break was taken aft..
one engineer firm enjoys 40 success rate in getting state government construction contracts. this month they have
In a General Social Survey respondents were asked "Do you support or oppose the following measures to deal with AIDS? (1) Have the government pay all of the health care costs of AIDS patients;
Suppose the population standard deviations are not the same. At.05 significance level, is there a difference in mean waiting time?
Calculate a p-value and draw a conclusion. b) In another experiment that compared infested bark with a mixture of infested and uninfested bark
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