Subject: Probability and Statistics

***

Topic: Normal Random Variable

Direction: Choose the correct answer for the following questions:

Page 130-131 Item no. 1: What is half of the total area of the normal curve? A -1 B. OC 0.5 D.1 Page 130-131 Item no. 2: What is the shape of a Normal Probability Distributions? A. bar B. bell C. circle D. line Page 130-131 Item no. 3: Which part of a normal curve is asymptotic with the horizontal axis? A center B. curve C. tail D. top Page 130-131 Item no. 6: Under the curve, the area to the right of the mean is A. 30% B. 47.72% C. 50% D. 68% Page 130-131 Item no. 7: Which of the following parameters is the basis of the shape of the normal curve? A. mean B. standard deviation C. Variance D. Both A and B Page 141-143 Item no. 6: What mathematical operation to use in getting values from the z table to find the area between the two z values? A. Add B. Divide C. Multiply D. Subtract Page 141-143 Item no. 7: What is the area between z = 0.23 and z = 1.997 A. 0.3858 B. 0.3588 C. 0.8239 D. 0.8583 Page 141-143 Item no. 8: Find the area above z= 214 A. 0.052 B. 0.0162 C. 0.0324 D. 0.9838 Page 141-143 Item no. 12: Find the area under the standard normal curve between z * -15 and z = 2 52. A. 0.0668 B. 0.9270 C. 0.9273 D. 0.9392 Page 141-143 Item no. 13: Find the area under the standard normal curve between z = -3 and z = 0. A 0.4987 B. 0.5000 C. O.9987 D. 14987