Question 19 4 pts Suppose a random variable x is best described by a normal distribution...
Suppose a random variable x is best described by a normal distribution with = 60 and sigma=16. Find the z-score that corresponds to the value x = 0. 0 -3.75 0-16 O 16 0 3.75
18. Suppose the random variable x is best described by a normal distribution with u = 30 and o = 7.9. Find the Z-score that corresponds to each of the following x values. a. X=36, z= b. X=35, z=_ c. X=22, ze d. X=30, ZE e. X=19, ZF f. X=36, z
suppose X is a random variable best described by a uniform probability distribution with a=30 and b=50 find p(30
4. (8 Marks) Suppose X is a random variable best described by a uniformly distribution or probability that ranges from 2 to 11. a) Write down the probability density function f(1). (1.5 points) b) Compute the following: i) mean (1.5 points) ii) standard deviation (1.5 points) iii) P(X < 3.858) (1.5 points) iv) P(-O< X <H+ o) (2 points)
1 point) Suppose a random variable x is best described by a uniform probability distribution with range 2 to 5. Find the value of a that makes the following probability statements true. (a) P(x <a) -0.18 a E (b) P(x < a) 0.78 (c) P(x 2 a) 0.23 (d) P(x > a) = 0.95 a= (e) P( 1.78 x a) = 0.02 a=
Question 1 1 pts Suppose X is a normal random variable with a mean equal to 50 and a standard deviation equal to 5. Find the value of: PIX < 60) Your answer should include four decimal places. Question 2 1 pts Suppose X is a normal random variable with a mean equal to 50 and a standard deviation equal to 5. Find the value of: PIX > 43) Your answer should include four decimal places.
Question 11 4 pts Find an approximate value of the standard normal random variable z, called to such that P (2>20) = 0.70. O -0.52 O -0.98 -0.47 -0.81 < Previous Next
If random variable X has normal distribution with mean u=50 and the standard deviation q=2 , then the value of z-score corresponding to the value X =60 is : - 10 - 5 - 50 - 0
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.
(b) Suppose that the random variable X has a normal distribution with mean μ and standard deviation σ. Which of the following is correct about the value x-μ+.28ơ i. The z-score of x is-0.58. ії. x is approximately .61 standard deviations above the mean. iii. There is approximately 39% chance of getting a value that is larger than x. iv. There is approximately 61% chance of getting a value that is larger than T v. r is approximately the 39th...