Question

The mean and standard deviation of a random variable x are 7 and 4 respectively. Find...

The mean and standard deviation of a random variable x are 7 and 4 respectively. Find the mean and standard deviation of the given random variables:

(1) y=x+1 μ= σ=

(2) v=8x μ= σ=

(3) w=8x+1 μ= σ=

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The mean and standard deviation of a random variable x are 10 and 3 respectively. Find...
The mean and standard deviation of a random variable x are 10 and 3 respectively. Find the mean and standard deviation of the given random variables: (1) y=x+4 μ= σ= (2) v=9x μ= σ= (3) w=9x+4 μ= σ=
A normal random variable x has an unknown mean and standard deviation. The probability that x...
A normal random variable x has an unknown mean and standard deviation. The probability that x exceeds 4 is 0.975, and the probability that x exceeds 5 is 0.95. Find μ and σ.
Find the mean, μ, and standard deviation, σ, for a binomial random variable X. (Round all...
Find the mean, μ, and standard deviation, σ, for a binomial random variable X. (Round all answers for σ to three decimal places.) (a) n = 45, p = .50. μ = σ = (b) n = 1, p = 0.25. μ = σ = (c) n = 100, p = 0.75. μ = σ = (d) n = 30, p = .01. μ = σ =
X is a normal random variable with mean μ and standard deviation σ. Then P( μ−...
X is a normal random variable with mean μ and standard deviation σ. Then P( μ− 1.2 σ ≤ X ≤ μ+ 1.9 σ) =? Answer to 4 decimal places.
7. A normal random variable x has mean μ = 1.7 and standard deviation σ =...
7. A normal random variable x has mean μ = 1.7 and standard deviation σ = 0.17. Find the probabilities of these X-values. (Round your answers to four decimal places.) (a)   1.00 < X < 1.60 (b)    X > 1.39 (c)   1.25 < X < 1.50 8. Suppose the numbers of a particular type of bacteria in samples of 1 millilitre (mL) of drinking water tend to be approximately normally distributed, with a mean of 81 and a standard deviation of 8. What...
Given a random variable X following normal distribution with mean of -3 and standard deviation of...
Given a random variable X following normal distribution with mean of -3 and standard deviation of 4. Then random variable Y=0.4X+5 is also normal. (1)Find the distribution of Y, i.e. μy,σy (2)Find the probabilities P(−4<X<0),P(−1<Y<0) (3)Find the probabilities(let n size =8) P(−4<X¯<0),P(3<Y¯<4) (4)Find the 53th percentile of the distribution of X
i) A random variable X has a binomial distribution with mean 6 and variance 3.6: Find...
i) A random variable X has a binomial distribution with mean 6 and variance 3.6: Find P(X = 4). ii) Let X equal the larger outcome when a pair of four-sided dice is rolled. The pmf of X is f(x) = (2x - 1/ 16) ; x = 1; 2; 3; 4. Find the mean, variance and standard deviation of X. iii) Let μ and σ^2 denote the mean and variance of the random variable able X. Determine E [(X...
Suppose X is a normal random variable with mean μ = 100 and standard deviation σ...
Suppose X is a normal random variable with mean μ = 100 and standard deviation σ = 7. Find b such that P(100 ≤ X ≤ b) = 0.3. HINT [See Example 3.] (Round your answer to one decimal place.) b =
If x is a binomial random variable, compute the mean, the standard deviation, and the variance...
If x is a binomial random variable, compute the mean, the standard deviation, and the variance for each of the following cases: (a) n=4,p=0.7 μ= σ2= σ= (b) n=3,p=0.7 μ= σ2= σ= (c) n=5,p=0.4 μ= σ2= σ= (d) n=5,p=0.8 μ= σ2= σ=
Suppose that X is a random variable with mean 21 and standard deviation 4 . Also...
Suppose that X is a random variable with mean 21 and standard deviation 4 . Also suppose that Y is a random variable with mean 42 and standard deviation 8 . Find the mean of the random variable Z for each of the following cases (Give your answer to three decimal places.) a) Z = 3 + 10X b) Z = 3X − 10 c) Z = X + Y d) Z = X − Y e) Z = −4X...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT