Question

Let z be a normal random variable with mean 0 and standard deviation 1. What is...

Let z be a normal random variable with mean 0 and standard deviation 1. What is

P(-2.25 < z < -1.1)?

a 0.3643

b 0.8643

c 0.1235

d 0.4878

e 0.5000

Let zbe a normal random variable with mean 0 and standard deviation 1. The 50thpercentile of zis ____________.

a 0.6700

b -1.254

c 0.0000

d 1.2800

e 0.5000

Let zbe a normal random variable with mean 0 and standard deviation 1. The 75thpercentile of zis ____________.

a 0.6700

b -1.254

c 0.0000

d 1.2800

e 0.5000

Let z be a normal random variable with mean 0 and standard deviation 1. The 90thpercentile of z is ____________.

a 1.645

b -1.254

c 1.960

d 1.280

e 1.650

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
Let Z be a standard normal random variable (mean = 0 and sd = 1) and...
Let Z be a standard normal random variable (mean = 0 and sd = 1) and calculate the following probabilities: (a)    Pr(0 ≤ Z ≤ 2.49) (b)    Pr(0 ≤ Z ≤ 1) (c)     Pr(−2.50 ≤ Z ≤ 0) (d)     Pr(−2.50 ≤ Z ≤ 2.50) (e)    Pr(Z ≤ 1.52)
Let Z be a standard normal random variable (mean = 0 and sd = 1) and...
Let Z be a standard normal random variable (mean = 0 and sd = 1) and calculate the following probabilities: (a)    Pr(0 ≤ Z ≤ 2.68) (b)    Pr(0 ≤ Z ≤ 2) (c)    Pr(−2.60 ≤ Z ≤ 0) (d)    Pr(−2.60 ≤ Z ≤ 2.60) (e)    Pr(Z ≤ 1.26)
Let Z ∼ N(0, 1) be a standard normal random variable, and let z be a...
Let Z ∼ N(0, 1) be a standard normal random variable, and let z be a possible value of Z. How large would z have to be to be considered an outlier by the 1.5 IQR rule?
Given that z is a standard normal random variable, find z for each situation (to 2...
Given that z is a standard normal random variable, find z for each situation (to 2 decimals) a. the area to the left of z is 0.9732 b. the area between 0 and z is 0.4732 c. the area to the left of z is 0.8643 d. the area to the right of z is 0.1251 e. the are to the left of z is 0.6915 f. the are to the right of z is 0.3085
A: Let z be a random variable with a standard normal distribution. Find the indicated probability....
A: Let z be a random variable with a standard normal distribution. Find the indicated probability. (Round your answer to four decimal places.) P(z ≤ 1.11) = B: Let z be a random variable with a standard normal distribution. Find the indicated probability. (Round your answer to four decimal places.) P(z ≥ −1.24) = C: Let z be a random variable with a standard normal distribution. Find the indicated probability. (Round your answer to four decimal places.) P(−1.78 ≤ z...
2. Let the random variable Z follow a standard normal distribution, and let z1 be a...
2. Let the random variable Z follow a standard normal distribution, and let z1 be a possible value of Z that is representing the 10th percentile of the standard normal distribution. Find the value of z1. Show your calculation. A. 1.28 B. -1.28 C. 0.255 D. -0.255 3. Given that X is a normally distributed random variable with a mean of 52 and a standard deviation of 2, the probability that X is between 48 and 56 is: Show your...
A continuous random variable Z follows standard normal distribution. a) What is the mean of Z?...
A continuous random variable Z follows standard normal distribution. a) What is the mean of Z? b) What is the standard deviation of Z? c) Z=(x-10)/5 What is the distribution of X ?
Let Z denote the standard normal random variable. If P( 1 < Z < c )...
Let Z denote the standard normal random variable. If P( 1 < Z < c ) = 0.128,   what is the value of c ?
-. For what follows, Z denotes the standard normal random variable. (1) P(Z<1.26) is about (a)...
-. For what follows, Z denotes the standard normal random variable. (1) P(Z<1.26) is about (a) 0.7924 (b) 0.3962 (c) 0.1038 (d) 0.6038 (e) 0.8962 (2) P(-0.54 < Z < 0.78) is about (a) 0.2054 (b) 0.0769 (c) 0.4877 (d) 0.2823 (e) 0.6877 -Assume the random variable X is normally distributed with mean 172 and standard deviation 10. Find the following probabilities. (3) P(X<160) (a) 0.8849 (b) 0.1151 (c) 0.9999 (d) 0.8078 (e) 0.8438 (4) P(X>150) (a) 0.0139 (b) 0.9861...
Assume Z is a standard normal random variable with mean 0 and variance 1. Find P(Z<0.44)?...
Assume Z is a standard normal random variable with mean 0 and variance 1. Find P(Z<0.44)? Area below 0.44? Note: Enter X.XX AT LEAST ONE DIGIT BEFORE THE DECIMAL, TWO AFTER and round up. Thus, 27 is entered as 27.00, 3.5 is entered as 3.50, 0.3750 is entered as 0.38 | | Assume Z is a standard normal random variable with mean 0 and variance 1. Find P(Z>-1.76)? Area above -1.76? Note: Enter X.XX AT LEAST ONE DIGIT BEFORE THE...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT