Question

A) Suppose that X follows a normal distribution with a mean of 850 and a standard...

A) Suppose that X follows a normal distribution with a mean of 850 and a standard deviation of 100. Find P(X>700).

B) Suppose that X follows a normal distribution with a mean of 500 and a standard deviation of 100. For what sample size would you expect a sample mean of 489 to be at the 33rd percentile?

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

Homework Answers

Answer #1

TOPIC:Normal distribution.

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
Suppose x has a distribution with a mean of 20 and a standard deviation of 3....
Suppose x has a distribution with a mean of 20 and a standard deviation of 3. Random samples of size n = 36 are drawn. Is the sampling distribution of x normal? How do you know? What is the mean and the standard deviation of the sampling distribution of x? Find the z score corresponding to x = 19. Find P (x < 19). Would if be unusual for a random sample of size 36 from the x distribution to...
A random variable X follows a normal distribution with mean 135 and standard deviation 12. If...
A random variable X follows a normal distribution with mean 135 and standard deviation 12. If a sample of size 10 is taken, find P (x̅ < 137). (4 decimal places) Find the answer using StatCrunch.
Suppose that daily calorie consumption for American men follows a normal distribution with a mean of...
Suppose that daily calorie consumption for American men follows a normal distribution with a mean of 2760 calories a standard deviation of 500 calories a: On a randomly selected day, we would expect 90% of American men to consume ______ calories or more   
Suppose the random variable X follows a normal distribution with mean μ=52 and standard deviation σ=10....
Suppose the random variable X follows a normal distribution with mean μ=52 and standard deviation σ=10. Calculate each of the following. In each case, round your response to at least 4 decimal places. a) P(X < 41) = b) P(X > 61) = c) P (47 < X < 67) =
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
Suppose x has a normal distribution with mean μ = 45 and standard deviation σ =...
Suppose x has a normal distribution with mean μ = 45 and standard deviation σ = 10. Describe the distribution of x values for sample size n = 4. (Round σx to two decimal places.) μx = σx = Describe the distribution of x values for sample size n = 16. (Round σx to two decimal places.) μx = σx = Describe the distribution of x values for sample size n = 100. (Round σx to two decimal places.) μx...
11. 7 & 8 (S 7.2) Suppose the random variable X follows a normal distribution with...
11. 7 & 8 (S 7.2) Suppose the random variable X follows a normal distribution with mean ?=103and standard deviation ?=25. Calculate each of the following. In each case, round your response to at least 2 decimal places. a) Calculate the location of the 86th percentile on the distribution of X. b) Calculate the location of the 31st percentile on the distribution of X.
Suppose the random variable X follows a normal distribution with mean μ=50and standard deviation σ=10. Calculate...
Suppose the random variable X follows a normal distribution with mean μ=50and standard deviation σ=10. Calculate each of the following. In each case, round your response to at least 4 decimal places. a) P(X<41)=    b) P(X>61)=    c) P(45<X<65)=   
Suppose the random variable X follows a normal distribution with mean μ=55and standard deviation σ=10. Calculate...
Suppose the random variable X follows a normal distribution with mean μ=55and standard deviation σ=10. Calculate each of the following. In each case, round your response to at least 4 decimal places. a) P(X<41) b) P(X>64) c)P(50<X<70)
Suppose x has a normal distribution with mean μ = 16 and standard deviation σ =...
Suppose x has a normal distribution with mean μ = 16 and standard deviation σ = 11. Describe the distribution of x values for sample size n = 4. (Round σx to two decimal places.) μx = σx = Describe the distribution of x values for sample size n = 16. (Round σx to two decimal places.) μx = σx = Describe the distribution of x values for sample size n = 100. (Round σx to two decimal places.) μx...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT