Suppose X∼N(8,1.5), and x=5. Find and interpret the z-score of the standardized normal random variable.
The z-score when x=5 is . The mean is ____
.
This z-score tells you that x=5 is _____
standard deviations to the left of the mean.
Suppose X∼N(8,1.5), and x=5. Find and interpret the z-score of the standardized normal random variable. The...
Question Suppose X∼N(12.5,1.5), and x=11. Find and interpret the z-score of the standardized normal random variable. Provide your answer below: The z-score when x=11 is . The mean is . This z-score tells you that x=11 is standard deviation(s) to the left of the mean
Standardize a Normally Distributed Random Varlable Question Suppose X~N(13.5, 1.5), and 9. Find and interpret the z-score of the standardized normal random variable. Sorry, that's incorrect. Try again? The mean is The z-score when x-9 is standard deviations to the left of the mean. This z-score tells you that x-9 is
Standardize a Normally Distributed Random Varlable Question Suppose X~N(13.5, 1.5), and 9. Find and interpret the z-score of the standardized normal random variable. Sorry, that's incorrect. Try again? The...
Suppose x is a normal random variable with mean u and standard deviation o. If z is the standardized normal random variable of x, which of the following statements is false? (1) When r = y, the value of z=0. (2) When z is less than the mean y, the value of z is negative. (3) When r is greater than the mean y, the value of z is positive. (4) It is always the case that z <I.
Given that z is a standard normal random variable, find the z-score for a situation where the area to the left if z is 0.8907.
Given that z is a standard normal random variable, find the z-score for a situation where the area to the left of z is 0.0901.
1. (5 points) Suppose Z is a random variable that follows the standard normal distribution. a) Find P(Z > 0.45). b) Find P(0.7 SZ 1.6). c) Find 20.09. d) Find the Z-score for having area 0.18 to its left under the standard normal curve. e) Find the value of z such that P(-2SZS2) -0.5.
1. (5 points) Suppose Z is a random variable that follows the standard normal distribution. a) Find P(Z > 0.45). b) Find P(0.7 SZ 1.6). c) Find 20.09. d) Find the Z-score for having area 0.18 to its left under the standard normal curve. e) Find the value of z such that P(-2SZS2) -0.5. 3. (4 points) The scores on a test are normally distributed with a mean of 75 and a standard deviation of 8. a) Find the proportion...
Suppose X is a normal random Variable with mean p = 46 and standard deviations 11 (a) Compute the z-value corresponding to X = 30 (1) Suppose the area under the standard normal curve to the left of the value found in part(a) is 0.0729. What is the area under the normal curve to the left of X (c) What is the area under the normal curve to the right of X=30? 307 (Round to two decimal places as needed)
A)What is the z-score of x = 4, if it is 1.9 standard deviations to the left of the mean? (Enter an exact number as an integer, fraction, or decimal.) z = B) What is the z-score of x = 5, if it is 0.166 standard deviations to the left of the mean? (Enter an exact number as an integer, fraction, or decimal.) z = C) Suppose X ~ N(12, 1). What value of x has a z-score of −2.25?...
40 B 1. (5 points) Suppose Z is a random variable that follows the standard normal distribution. a) Find P(Z > 0.45). b) Find P(0.7 SZ 1.6). c) Find 20.09. d) Find the Z-score for having area 0.18 to its left under the standard normal curve. e) Find the value of z such that P(-2SZS2) -0.5.