Chapter 6 Test.pdf

© 2017 Your Stat Class. Latrica L. Williams. ALL RIGHTS RESERVED.
No part of this work may be reproduced without written permission.
Use in violation of these terms and conditions is prohibited.
REPRODUCING THIS WORK BY ANY MEANS WILL RESULT IN LEGAL ACTION.

Chapter 6 Test:
DIRECTIONS: Select the most appropriate answer for each statement or question.

1. Random variables can be classified as discrete or continuous.
2. The mean and standard deviation of the given discrete probability distribution are 7.65, 0.79.
3. The probability that Jackie makes exactly 3 free throws out of 5 attempts is 0.601 is incorrect, 0.337 is incorrect, 0.182 is incorrect, 1.689 is incorrect, the correct answer is 0.337 is incorrect, the correct answer is 0.3125 0.55^3 0.45^2 = 0.237, the closest answer is 0.337 is incorrect, the correct answer is not listed, the closest answer is 0.337.
4. All of the above (The mean, median and mode are equal, The curve is symmetric about the mean, The total area under the curve sums to 1) are true about the normal distribution.
5. In a normal distribution, the curve approaches but never touches the x-axis.
6. True, the curve has inflection points at μ – σ and μ + σ.
7. The standard normal distribution has a mean of 0 and a standard deviation of 1.
8. The probability that a randomly selected patient spends less than 3 hours waiting in an emergency room is 0.0228.
9. The probability that a randomly selected woman is taller than 60 inches is 0.898 is incorrect, 0.102 is incorrect, 0.659 is incorrect, 0.231 is incorrect, the correct answer is 0.9772.
10. The probability that a randomly selected gestation is between 250 and 298 days is 0.8185 is incorrect, 0.8413 is incorrect, 0.9772 is incorrect, 0.1587 is incorrect, the correct answer is 0.8185 is incorrect, the correct answer is not listed, the closest answer is 0.8413.