solution:
for a normal random variable x the following is false
the value of mean is zero this not charateristic of the normal distribution
remaining all are correct according to normal distribution
the value of mean is zero is false
1 point For a normal random variable X, which of the following is FALSE* O The...
Which of the following is not a characteristic of the normal distribution? a) The total area under the curve is 1.0 b) The curve is symmetric about the mean c) The value of the mean is always greater than the value of the standard deviation d) The two tails of the curve extend indefinitely
0.67 of 1 Point Question Help (2) 7.2 RA-1 Suppose X is a normal random variable with mean j = 45 and standard deviation o= 11. (a) Compute the Z-value corresponding to X = 28. (b) Suppose the area under the standard normal curve to the left of the z-value found in part (a) is 0.0611. What is the area under the normal curve to the left of X= 28? (c) What is the area under the normal curve to...
Suppose X is a normal random variable with mean u = 50 and standard deviation o = 11. (a) Compute the z-value corresponding to X = 36. (b) Suppose the area under the standard normal curve to the left of the Z-value found in part (a) is 0.1016. What is the area under the normal curve to the left of X = 36? (c) What is the area under the normal curve to the right of X = 36? (a)...
Suppose X is a normal random variable with mean p = 49 and standard deviation o = 8. (a) Compute the z-value corresponding to X = 37. (b) Suppose the area under the standard normal curve to the left of the Z-value found in part (a) is 0.0668. What is the area under the normal curve to the left of X = 37? (c) What is the area under the normal curve to the right of X = 37?
Suppose X is a normal random variable with mean p = 64 and standard deviation o=6. (a) Compute the z-value corresponding to X = 56. (b) Suppose the area under the standard normal curve to the left of the Z-value found in part (a) is 0.0912. What is the area under the normal curve to the left of X= 56? (c) What is the area under the normal curve to the right of X= 56? (a) z= (Round to two...
Which of the following statements is not a property of the normal probability distribution?A. The normal distribution is symmetricB. Exactly two-thirds of all possible observed values of the random variable x are within plus or minus one standard deviations of the population meanC. The mean, median and mode are equalD. The area under the normal curve to the right of the mean is equal to the area under the normal curve to the left of the meanE. All of the...
Let the random variable X follow a normal distribution with u = 30 and o = 4. The probability is 0.90 that X is in the symmetric interval about the mean between two numbers, Land U (L is the smaller of the two numbers and U is the larger of the two numbers). Calculate L.
True of False: a: The tails of the normal distribution extend to the positive and negative infinity b: The mean of a normal distribution is always 0 c: The total area under the normal distribution is 1
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)
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.