Bundle: Essentials of Modern Business Statistics with Microsoft Office Excel, Loose-leaf Version, 7th + LMS Integrated for MindTap Business Statistics, 1 term (6 months) Printed Access Card
7th Edition
ISBN: 9781337589567
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
Publisher: Cengage Learning
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Chapter 6.2, Problem 23E
The time needed to complete a final examination in a particular college course is
- What is the
probability of completing the exam in one hour or less? - What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes?
- Assume that the class has 60 students and that the examination period is 90 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time?
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30. An individual who has automobile insurance from a certain company is randomly selected. Let Y be the num- ber of moving violations for which the individual was cited during the last 3 years. The pmf of Y isy | 1 2 4 8 16p(y) | .05 .10 .35 .40 .10
a.Compute E(Y).b. Suppose an individual with Y violations incurs a surcharge of $100Y^2. Calculate the expected amount of the surcharge.
24. An insurance company offers its policyholders a num- ber of different premium payment options. For a ran- domly selected policyholder, let X = the number of months between successive payments. The cdf of X is as follows:
F(x)=0.00 : x < 10.30 : 1≤x<30.40 : 3≤ x < 40.45 : 4≤ x <60.60 : 6≤ x < 121.00 : 12≤ x
a. What is the pmf of X?b. Using just the cdf, compute P(3≤ X ≤6) and P(4≤ X).
Chapter 6 Solutions
Bundle: Essentials of Modern Business Statistics with Microsoft Office Excel, Loose-leaf Version, 7th + LMS Integrated for MindTap Business Statistics, 1 term (6 months) Printed Access Card
Ch. 6.1 - The random variable x is known to be uniformly...Ch. 6.1 - Delta Airlines quotes a flight time of 2 hours, 5...Ch. 6.1 - Prob. 4ECh. 6.1 - In October 2012, Apple introduced a much smaller...Ch. 6.2 - A random variable is normally distributed with a...Ch. 6.2 - Prob. 12ECh. 6.2 - Prob. 15ECh. 6.2 - Prob. 19ECh. 6.2 - The time needed to complete a final examination in...Ch. 6.2 - New York City is the most expensive city in the...
Ch. 6.3 - Prob. 29ECh. 6.3 - Wendy's restaurant has been recognized for having...Ch. 6 - Prob. 33SECh. 6 - The port of South Louisiana. located along 54...Ch. 6 - Prob. 45SECh. 6 - Specialty Toys Specialty Toys, Inc. sells a...Ch. 6 - Specialty Toys Specialty Toys, Inc. sells a...Ch. 6 - Specialty Toys Specialty Toys, Inc. sells a...Ch. 6 - Gebhardt Electronics Gebhardt Electronics produces...Ch. 6 - Gebhardt Electronics Gebhardt Electronics produces...Ch. 6 - Gebhardt Electronics Gebhardt Electronics produces...
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