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Investment A has the expected return of $25MIL and Investment B has expected return of $5MIL. Market risk analysts think standard deviation of return from A is $10MIL and for B is $30MIL (negative returns are possible).
(a) If you suppose returns follow normal distribution, which investment would give better chance of getting at least a $40MIL return and describe why.
(b) How could the answer in question (a) change if you knew returns followed skewed distribution instead of normal distribution? Describe briefly.
The National Collegiate association (NCAA) reported that the mean number of hours spent per week on coaching and recruiting by college football assistant coaches during the season 70.
A polling organization plans to sample 1000 adult Americans to estimate the proportion of Americans who think crime is a serious problem in this country. (a) What is the parameter of interest to the polling organization? (b) What will be the stati..
A) Resistant statistics should always be used. B) Resistant statistics should be used when the data is not bell-shaped. C) Sensitive statistics should be used when the data is not bell-shaped. D) Sensitive statistics should always be used. E) Resista..
P-value to test hypotheses,
What control limits should be applied to his sample?
In studying the performance of the comapany's stock investments over the past year, the research manager of a mutual fund company finds that only 43% of the stocks returned more than the rate that had been expected at the beginning of the year.
Many states are carefully considering steps that would help them collect sales taxes on items purchased through the Internet.
What is the difference between a sample and a population? When can the same information (e.g. the age of each of the ten students in our class) be considered both sample data and population data?
An instructor has a test bank consisting of 300 easy true-false questions, 200 difficult true-false questions, 500 easy multiple choice questions and 400 difficult multiple choice questions.
The appropriate use of multiple regression depends on being able to make four basic assumptions about the data being used to develop the regression model:
The function that defines the probability distribution of a continuous random variable is a?For a continuous random variable x, the probability density function f(x) represents.
Suppose we have observations x1, x2, . . . , xn. Prove that the sum of deviations of the observations from their arithmetic mean is always equal to zero.
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