(Answered) Anbspgiven a random variable x with mean 10 and variance 9

Statistics

a) Given a random variable x with mean 10 and variance 9, find the expected value and variance of the random variable y where y = 12 + 2x.

b) A random variable x has E[x]=5 and Var(x)=9. A random variable y, independent of x, has E[y]=10 and Var(y)=25.

Find E[xy], E[x+2y], E[13-2x]
Find Var(x-y), Var(x+2y), Var(13-2x)
Cov(x,y)

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92511703
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

What considerations do you need to take when considering

What considerations do you need to take when considering "time value of money"? Why is the following statement true? "A dollar today is worth more than a dollar tomorrow."

In a poker hand consisting of 5 cards find the probabilty

In a poker hand consisting of 5 cards find the probabilty of holding 2 aces and 3 jacks In how many ways can you pick 5 different questions from a test bank contsisting of 15 questions? 3 dice are thrown find the probabi ...

A clinical psychologist is the primary therapist for 18

A clinical psychologist is the primary therapist for 18 patients. She randomly selects a sample of 3 patients to be in her study. How many different samples of this size can be selected from this population of 18 patient ...

A budgeting web site reported thatnbsp20nbspof us

A budgeting Web site reported that 20?% of U.S. households have withdrawn money from a? 401(k) or other retirement account for needs other than retirement in 2013. A random sample of 11 U.S. households was selected. Comp ...

A sample of 100 randomly selected students found that the

A sample of 100 randomly selected students found that the proportion of students planning to travel home for Thanksgiving is 0.68. What is the Standard Deviation of the sampling distribution?

Suppose you sell a fixed asset for 121000 when its book

Suppose you sell a fixed asset for $121,000 when it's book value is $147,000. If your company's marginal tax rate is 35%, what will be the effect on cash flows of this sale (i.e., what will be the after-tax cash flow of ...

1 what is the standard deviation of the sampling

1. What is the standard deviation of the sampling distribution? 2. What is the expected value? 3. What is the probability that the average life in the sample will be between 2,670.56 and 2,809.76 hours? 4. What is the pr ...

Gven that x is binomially distributed with n 36 and p

Given that X is binomially distributed with n = 36, and p = 0.33, use the normal approximation to the binomial (with correction for continuity) to estimate the probability that X is less than 14? Round your answer to 2 p ...

1 out-of-state tuition and fees at the top graduate

1. Out-of-state tuition and fees at the top graduate schools of business can be very expensive, but the starting salary and bonus paid to graduates from many of these schools can be substantial. The following data show t ...

You want to retire in 35 years to fund the retirement you

You want to retire in 35 years. To fund the retirement, you deposit $25,000 into an account now, and you deposit $20,000 five years from now. You also plan to save an equal amount each year between now and 35 years from ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert