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Question: An investment is believed to earn $2,000 with probability 0.2, $2,500 with probability 0.3, and $3,000 with probability 0.5. An alternative investment may earn $0 with probability 0.1, $3,000 with probability 0.2, $4,000 with probability 0.5, and $7,000 with probability 0.2. Construct a decision tree for this problem, and determine the investment with the highest expected monetary outcome. What are the limitations of the analysis?
The lifetime of zzz batteries are normally distributed with a mean of 270 hours and a standard deviation of 10n hours. Find the number of hours that represent the 40 th percentile.
Federated South Insurance Company has developed a new screening program for selecting new sales agents. Given the expected improvement, what is the probability that 19 or more reach their minimum sales goals
A sample mean is 102. another 50 observation with a standard deviation of 6 and a sample mean of 6. conduct a hypothesis using the .05 significance level.
Determine the equations for the acceptance and rejection lines. What is the first opportunity to reject? What is the first opportunity to accept?
The airplane will make a successful flight if at least 50 percent of its engines remain operative. For what values of p is a 4-engine plane preferable to a 2-engine plane?
Suppose X is a discrete random variable with mean mX and variance s2X. Let Y be a linear function of X, such that Y = aX + b, where a and b are constants. Find the mean and variance of Y in terms of mX and s2X.
question your job as marketing manager of a large chain is to watch the overall market situation in many districts. the
the average weekly stock prices of overseas trading inc. a u.s. based multinational company can be estimated from
The ancient Greeks thought that the most pleasing shape for a rectangle was one for which the ratio of the length to the width was 8 to 5, the golden ration.
A study will be done to determine the relationship, if any, between where a college student lives (on-campus or off campus) and grade point average. Would it be better to use a randomized experiment or an observational study? Explain.
Suppose a wildlife service wishes to estimate, with 99% confidence, the mean number of days of hunting per hunter for all licensed hunters in the state during a given season, with a bound on the error of estimation equal to 2 hunting days.
question when certain quantities are measured the last digits tend to be uniformly distributed but if they are
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