Question

Let X ~ N(3, 5). What is the standard deviation of X?

Let X ~ N(3, 5). What is the standard deviation of X?

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

Homework Answers

Answer #1

Solution,

The normal distribution with mean µ and variance  2 X N ( µ,  2 )

X N ( 3, 5)

standard deviation = = 2 = 5 = 2.236

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
Let X be normallyh distributed with a mean of 100 and standard deviation of 25 a)what...
Let X be normallyh distributed with a mean of 100 and standard deviation of 25 a)what is the probability that X will be at most 120 b)suppose a sample of 30 students were selected,what is the probability that X will be more than 95
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
The return on stock X has mean 5 and standard deviation 3. The return on stock...
The return on stock X has mean 5 and standard deviation 3. The return on stock Y has mean 8 and standard deviation 10. The variance of an equal portfolio of the two stocks (that is, 0.5X + 0.5Y) is 19.75. What is the correlation between X and Y?
Let X be a binomial random variable with p = 0.7 a) For n = 3,...
Let X be a binomial random variable with p = 0.7 a) For n = 3, find P(X=1) b) For n = 5, find P(X≤3)
let X be a binomial random variable with n=8 and p=0.6. find the following (a) the...
let X be a binomial random variable with n=8 and p=0.6. find the following (a) the mean of X (b) the standard deviation of X (c) P(X<4) (d) P(X>5) (e) P(3<X<6)
Let x be a normal random variable with mean equal to 40 and standard deviation equal...
Let x be a normal random variable with mean equal to 40 and standard deviation equal to 5 a) P(x>55)=? b) P(x<49)=?
Let x ∈ N. Prove that if (x + 3)^2 is prime, then x^3 − x...
Let x ∈ N. Prove that if (x + 3)^2 is prime, then x^3 − x − 2020 ≤ 0
Let X be normally distributed with the mean μ = 100 and some unknown standard deviation...
Let X be normally distributed with the mean μ = 100 and some unknown standard deviation σ. The variable Z = X − A σ is distributed according to the standard normal distribution. Enter the value for A =  . It is known that P ( 95 < X < 105 ) = 0.5. What is P ( − 5 σ < Z < 5 σ ) =  (enter decimal value). What is P ( Z < 5 σ ) =  (as a...
Calculate standard deviation for the following population of N = 6 scores: 5, 0, 9, 3,...
Calculate standard deviation for the following population of N = 6 scores: 5, 0, 9, 3, 8, 5. Use the definitional formula and show your work. Also, please explain the definitional formula
Let X1, X2,...,Xn represent n random draws from a population with standard deviation σ and variance...
Let X1, X2,...,Xn represent n random draws from a population with standard deviation σ and variance σ^2 , so that V ar[X1] = V ar[X2] = ... = V ar[Xn] = σ^ 2 . Define the sample average taken from a sample of size n as follows: X¯ n ≡ (X1 + X2 + ... + Xn)/ n . a) Derive an expression for the standard deviation of X¯ n. [Hint: Your answer should depend only on σ and n]...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT