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Suppose you observe the investment performance of 400 portfolio managers and rank them by investment returns during the year. Twenty percent of all managers are truly skilled, and therefore always fall in the top half, but the others fall in the top half purely because of good luck. What fraction of these top-half managers would you expect to be top-half performers next year? Assume skilled managers always are top-half performers.
Find a lower bound for the probability P (|A20 - 50| ≤ 10), where A20 is the average of the distances from Hangtown at the time of breakdown.
you were interested in how long the average psychology major at your college studies per night so you asked 10
Insurance companies wouldn't exist unless customers were willing to pay the price of the insurance and the insurance companies were making a profit.
In a large corporation, 80% of the employees are men and 20% are women. The highest levels of education obtained by the employees are graduate training for 10% of the men, undergraduate training for 30% of the men, and high school training for 60%..
Let A be the event that a tourist visits the amusement park in Orlando and W be the event that a tourist visits the water park in Orlando. Draw a Venn diagram and label it properly with probabilities.
studies find that in a random sample of 3000 adults aged 18 and over 1410 owned an mp3 player. the 95 large-sample
Prepare a frequency distribution table for these data using single-valued classes - Compute the relative frequency and percentage distributions.
Using the empirical rule what percentage of adults is 25 - 45 has iq score bet 70 and 130.
CAPM and Expected return. If the risk-free rate is 6 percent and the expected rate of return on the market portfolio is 14 percent, is a security with a beta of 1.25 and an expected rate of return of 16 percent overpriced or under priced?
STAT 101 INTRODUCTORY STATISTICS Write down the cumulative distribution function of X - calculate the mean and standard deviation of X and in a random sample of six flights, what is the probability that all the passengers can be boarded in at lea..
color-blindness is any abnormality of the color vision system that causes a person to see colors differently than most
Present descriptive statistics (appropriate for the type of variable) in writing for each variable that you include in the test, by group if there is a grouping variable
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