81.59% is the right of what z-score on N(0,1)?
X N(0,1) and Z 3X2 + 1, what is the PDF of Z'?
If Z-N(0,1), show Var(Z) = 2.
Find the indicated z-score shown in the graph to the right. Area = The z-score is (Round to two decimal places as needed.)
Find the Z-score that has 75.2% of the distribution's area to its right. The Z-score is . (Round to two decimal places as needed.)
Find a z-score such that 20% of the total area is to the right of z. (Hint: Use the table backwards.) Click here to view page 1 of the table. Click here to view page 2 of the table. Choose the closest z-score such that 20% of the total area is to the right of z. | (Round to two decimal places as needed.)
Suppose X ~ N(2, 3). What value of x has a z-score of -0.67? If the area to the left of x in a normal distribution is 0.161, what is the area to the right of X?
In a normal distribution N(0,1), what are the two z-scores that will be the lower and upper boundaries for the middle 90 percent of the distribution? Choose the listed values that are the closest to your calculated value! - 1.96 and + 1.96 - 1.96 and + 1.65 - 2.58 and + 2.58 - 2.00 and + 2.58 - 1.65 and + 1.65 - 2.00 and + 2.00
4.28 If Z ~ N(0,1), find the following probabilities: a. P(Z <1.38) b. P(Z > 2.14) c. P(-1.27 <Z<-0.48)
Let Z ~ N(0,1). What is the proportion of standard normal values between -0.55 to 0.55? Question 16 options: 64.485% 34.203% 33.485% 41.768%
3. Let Z be a continuous random variable with Z-N(0,1). (a) Find the value of P(Z <-0.47). (b) Find the value of P(Z < 2.00). Note denotes the absolute value function. (c) Find b such that P(Z > b) = 0.9382. (d) Find the 27th percentile. (e) Find the value of the critical value 20.05-