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Investment A has an expected return of $25 million and Investment B has an expected return of $5 million. Market risk analysts believe the standard deviation of the return from A is $10 million, and for B is $30 million (negative returns are possible here). (a) If you assume returns follow a normal distribution, which investment would give a better change of getting at least a $40 million return? Explain. (b) How could your answer to part (a) change if you knew returns followed a skewed distribution instead of a normal distribution? Explain briefly.
Suppose we wish to test the null hypothesis that there are no differences among the proportion of men and women who developed a rash. Evaluate the P-value of the chi-square test of this hypothesis.
Why might the assumption of independence be violated? (b) Why might a driver be tempted not to use a seat belt "just on this trip"?
Determine the probability of choosing the area code at random which ends in the odd number if first digit cannot be 1 or 0?
Utilize this information to construct a probability table, and then calculate each of the given probabilities:P (female and domestic car).
If the pilot plant fails, Rob feels the chance of the full-scale facility succeeding is only 20%. The probability that the pilot plant will succeed is estimated at 0.6. Structure this problem with a decision tree and advise Rob what to do.
Average performance evaluation is higher for managers hired from outside firm compared with those promoted from within? What other stories does this graph tell?
A researcher used stepwise regression to create regression models to predict Birthrate (births per 1000) using five predictors:
Suppose that you are the director of table game operations at a large casino, known especially for its poker room. You are interested in determining the average number of hands the casino should expect per hour during peak hours in the poker room.
Assume X is an exponential random variable with parameter lambda. Find the method of moments estimator for lambda.
To test whether there is any association between two variables using Chi-Square test for independence.
What is the probability that a randomly selected cell phone bill is more than $67.75?
On average a certain intersection results in 3 traffic accidents per month. What is the probability that for any given month at this intersection
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