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= 10. Return after one year for stock X is a random variable with ux 112, ax = 10. Return for stock Y (a different company) has the same u and o. Assuming that X and Y are independent. The empirical rule states that approximately 68% of the time, a RV will be within one standard deviation of its mean. According to this rule, in what interval will the return of a portfolio consisting of 2 units of stock X and 3 units of stock Y occur about 2/3 of the time?

= 10. Return after one year for stock X is a random variable with ux 112, ax = 10. Return for stock Y (a different company) has the same u and o. Assuming that X and Y are independent. The empirical rule states that approximately 68% of the time, a RV will be within one standard deviation of its mean. According to this rule, in what interval will the return of a portfolio consisting of 2 units of stock X and 3 units of stock Y occur about 2/3 of the time?

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 1E
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Hi can you please solve question number 10 ? Thank you
Find the MGF and the mean o1 10. Return after one year for stock X is a random variable with μx = 112, ax = 10. Return for stock Y (a different company) has the same u and o. Assuming that X and Y are independent. The empirical rule states that approximately 68% of the time, a RV will be within one standard deviation of its mean. According to this rule, in what interval will the return of a portfolio consisting of 2 units of stock X and 3 units of stock Y occur about 2/3 of the time?
Transcribed Image Text:Find the MGF and the mean o1 10. Return after one year for stock X is a random variable with μx = 112, ax = 10. Return for stock Y (a different company) has the same u and o. Assuming that X and Y are independent. The empirical rule states that approximately 68% of the time, a RV will be within one standard deviation of its mean. According to this rule, in what interval will the return of a portfolio consisting of 2 units of stock X and 3 units of stock Y occur about 2/3 of the time?
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