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Searches at Switzerland's 406 commercial banks turned up only $3.3 million in accounts belonging to Zaire's deposed president, Mobutu Sese Seko. The Swiss banks had been asked to look a little harder after finding nothing at all the first time round.
a. If President Mobutu's money was distributed in all 406 banks, how much was found, on average, per bank?
b. If a random sample of 16 banks was first selected in a preliminary effort to estimate how much money was in all banks, then assuming that amounts were normally distributed with standard deviation of $2,000, what was the probability that the mean of this sample would have been less than $7,000?
The average age of a part-time employee at a ski resort has historically been 37 years. A random sample of 50 part-time employees in 2011 had a sample mean age of 38.5 years with a sample standard deviation of 16 years. At 10 percent level of sig..
Andy Lange is concerned with declining business at the bookstore. The students tell him that the prices are too high. Andy, however, has decided not to lower the prices. If the same conditions exist, what long-run market shares can Andy expect ..
a researcher conducts a study of white and black attitudes toward the police in her community.the percentage of white
in a jury there are 12 selected jurors. we are looking to see how many prospective people should go to jury duty.
The standard deviation of the sample was 6.2 weeks. Construct a 95 percent confidence interval for the population mean. Is it reasonable that the population mean is 28 weeks?
A random sample of 32 bottles is selected, and the mean amount of water per 1 gallon can is found to be 0.995 gallon. Calculate the test statistic.
A coin that comes up heads with probability 0.6 is continually ?ipped. Find the expected number of ?ips until either the sequence thht or the sequence ttt occurs, and ?nd the probability that ttt occurs ?rst.
Give all steps of a test of the hypothesis that the corresponding population proportions are equal.
(a) Find the mean, variance, and standard deviation of the probability distribution.
The opportunity to apply ethical theories to the complex issue of ageism
Government or organization whose effectis to prevent specific from reaching equilibrium. What evidence of excess supply or excess demand can you cite in these examples?
What is the probability of rolling a four in the gambling dice game of craps (given two six sided dice)? What is the probability that a player can roll a four 3 times in a row (assume that rolling the dice each time does not affect the outcome of..
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