Finite Mathematics and Calculus with Applications
1st Edition
ISBN: 9781323188361
Author: Margaret Lial
Publisher: Pearson Education
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Chapter 9.3, Problem 49E
Education The grading system known as “grading on the curve” is based on the assumption that grades are often distributed according to the normal curve and that a certain percent of a class should receive each grade, regardless of the performance of the class as a whole. The following is how one professor might grade on the curve.
| Grade | Total Points |
| A | Greater than μ + (3/2)σ |
| B | μ + (1/2 ) σ to μ + (3/2)σ |
| C | μ − (1/2) σ to μ + (1/2)σ |
| D | μ − (3/2) σ to μ − (1/2)σ |
| F | Below μ − (3/2)σ |
What percent of the students receive the following grades?
49. A
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Chapter 9 Solutions
Finite Mathematics and Calculus with Applications
Ch. 9.1 - Find the mean of the following data: 12, 17, 21,...Ch. 9.1 - Prob. 2YTCh. 9.1 - Prob. 3YTCh. 9.1 - Prob. 1ECh. 9.1 - Prob. 2ECh. 9.1 - Prob. 3ECh. 9.1 - Prob. 4ECh. 9.1 - Prob. 5ECh. 9.1 - Prob. 6ECh. 9.1 - Prob. 7E
Ch. 9.1 - Prob. 8ECh. 9.1 - Find the mean for each list of numbers. 9. 30,200;...Ch. 9.1 - Prob. 10ECh. 9.1 - Find the mean for each list of numbers. 11. 9.4,...Ch. 9.1 - Prob. 12ECh. 9.1 - Prob. 13ECh. 9.1 - Prob. 14ECh. 9.1 - Find the mean for the data in Exercise 1 from the...Ch. 9.1 - Prob. 16ECh. 9.1 - Prob. 17ECh. 9.1 - Prob. 18ECh. 9.1 - Prob. 19ECh. 9.1 - Prob. 20ECh. 9.1 - Prob. 21ECh. 9.1 - Prob. 22ECh. 9.1 - Prob. 23ECh. 9.1 - Prob. 24ECh. 9.1 - Prob. 25ECh. 9.1 - Prob. 26ECh. 9.1 - Prob. 27ECh. 9.1 - Prob. 28ECh. 9.1 - Prob. 29ECh. 9.1 - Prob. 30ECh. 9.1 - Prob. 31ECh. 9.1 - Prob. 32ECh. 9.1 - For grouped data, the modal class is the interval...Ch. 9.1 - Prob. 34ECh. 9.1 - Prob. 36ECh. 9.1 - Prob. 37ECh. 9.1 - Prob. 38ECh. 9.1 - Prob. 39ECh. 9.1 - Prob. 40ECh. 9.1 - Prob. 41ECh. 9.1 - Prob. 42ECh. 9.1 - New Housing Sales The number (in thousands) of new...Ch. 9.1 - Prob. 44ECh. 9.1 - Prob. 45ECh. 9.1 - Temperature The following table gives the number...Ch. 9.1 - Prob. 47ECh. 9.1 - Olympics The number of nations participating in...Ch. 9.1 - Prob. 49ECh. 9.1 - Prob. 50ECh. 9.1 - Prob. 51ECh. 9.1 - SAT I: Reasoning Test Given the following sequence...Ch. 9.2 - Prob. 1YTCh. 9.2 - Prob. 2YTCh. 9.2 - Prob. 1WECh. 9.2 - Prob. 2WECh. 9.2 - Prob. 1ECh. 9.2 - Prob. 2ECh. 9.2 - Find the range and standard deviation for each set...Ch. 9.2 - Find the range and standard deviation for each set...Ch. 9.2 - Find the range and standard deviation for each set...Ch. 9.2 - Find the range and standard deviation for each set...Ch. 9.2 - Find the range and standard deviation for each set...Ch. 9.2 - Find the range and standard deviation for each set...Ch. 9.2 - Prob. 9ECh. 9.2 - Prob. 10ECh. 9.2 - Prob. 11ECh. 9.2 - Prob. 12ECh. 9.2 - Chebyshevs theorem states that for any set of...Ch. 9.2 - Prob. 14ECh. 9.2 - Prob. 15ECh. 9.2 - Chebyshevs theorem states that for any set of...Ch. 9.2 - Prob. 17ECh. 9.2 - Prob. 18ECh. 9.2 - Prob. 19ECh. 9.2 - Prob. 20ECh. 9.2 - Prob. 21ECh. 9.2 - Prob. 22ECh. 9.2 - Prob. 23ECh. 9.2 - Prob. 24ECh. 9.2 - Prob. 25ECh. 9.2 - Prob. 26ECh. 9.2 - Prob. 27ECh. 9.2 - Prob. 28ECh. 9.2 - Prob. 29ECh. 9.2 - Prob. 30ECh. 9.2 - Prob. 31ECh. 9.2 - Prob. 32ECh. 9.2 - Prob. 33ECh. 9.2 - Prob. 34ECh. 9.2 - Prob. 35ECh. 9.2 - Prob. 36ECh. 9.2 - Prob. 37ECh. 9.2 - Prob. 38ECh. 9.2 - Prob. 39ECh. 9.2 - Box Office ReceiptsThe table below lists the 20...Ch. 9.2 - CookiesMarie Revak and Jihan Williams performed an...Ch. 9.3 - Find the following areas under the standard normal...Ch. 9.3 - Prob. 2YTCh. 9.3 - Prob. 3YTCh. 9.3 - Prob. 4YTCh. 9.3 - The peak in a normal curve occurs directly above...Ch. 9.3 - The total area under a normal curve (above the...Ch. 9.3 - Prob. 3ECh. 9.3 - Prob. 4ECh. 9.3 - Prob. 5ECh. 9.3 - Prob. 6ECh. 9.3 - Prob. 7ECh. 9.3 - Prob. 8ECh. 9.3 - Prob. 9ECh. 9.3 - Prob. 10ECh. 9.3 - Prob. 11ECh. 9.3 - Prob. 12ECh. 9.3 - Find the percent of the total area under the...Ch. 9.3 - Prob. 14ECh. 9.3 - Prob. 15ECh. 9.3 - Prob. 16ECh. 9.3 - Find a z-score satisfying the following...Ch. 9.3 - Prob. 18ECh. 9.3 - Prob. 19ECh. 9.3 - Prob. 20ECh. 9.3 - Prob. 21ECh. 9.3 - Prob. 22ECh. 9.3 - Prob. 23ECh. 9.3 - Prob. 24ECh. 9.3 - Prob. 25ECh. 9.3 - Prob. 26ECh. 9.3 - Prob. 27ECh. 9.3 - Prob. 28ECh. 9.3 - Quality ControlA box of oatmeal must contain 16...Ch. 9.3 - Quality ControlA box of oatmeal must contain 16...Ch. 9.3 - Prob. 31ECh. 9.3 - Prob. 32ECh. 9.3 - Prob. 33ECh. 9.3 - Prob. 34ECh. 9.3 - Quality ControlThe chickens at Colonel Thompsons...Ch. 9.3 - Prob. 36ECh. 9.3 - Prob. 37ECh. 9.3 - Prob. 38ECh. 9.3 - Annual BonusesSalespeople of a large corporation...Ch. 9.3 - Prob. 40ECh. 9.3 - Prob. 41ECh. 9.3 - Prob. 42ECh. 9.3 - Prob. 43ECh. 9.3 - Prob. 44ECh. 9.3 - Life SpansAccording to actuarial tables, life...Ch. 9.3 - Prob. 46ECh. 9.3 - Prob. 47ECh. 9.3 - Prob. 48ECh. 9.3 - EducationThe grading system known as grading on...Ch. 9.3 - Prob. 50ECh. 9.3 - Prob. 51ECh. 9.3 - Prob. 53ECh. 9.3 - Prob. 54ECh. 9.3 - Prob. 55ECh. 9.3 - Prob. 56ECh. 9.3 - Prob. 57ECh. 9.3 - Prob. 58ECh. 9.3 - Prob. 59ECh. 9.3 - Prob. 60ECh. 9.3 - Prob. 61ECh. 9.3 - KenThe same researchers from Exercise 61 wondered...Ch. 9.4 - Suppose a die is rolled 12 times. Find the mean...Ch. 9.4 - Prob. 2YTCh. 9.4 - Prob. 3YTCh. 9.4 - Prob. 1WECh. 9.4 - Prob. 2WECh. 9.4 - Prob. 3WECh. 9.4 - Prob. 1ECh. 9.4 - Prob. 2ECh. 9.4 - Prob. 3ECh. 9.4 - Prob. 4ECh. 9.4 - Prob. 5ECh. 9.4 - Prob. 6ECh. 9.4 - Prob. 7ECh. 9.4 - For the remaining exercises in this section, use...Ch. 9.4 - Prob. 9ECh. 9.4 - Prob. 10ECh. 9.4 - Prob. 11ECh. 9.4 - Prob. 12ECh. 9.4 - Prob. 13ECh. 9.4 - Prob. 14ECh. 9.4 - Prob. 15ECh. 9.4 - (a) Try to use both the binomial probability...Ch. 9.4 - Prob. 17ECh. 9.4 - Prob. 18ECh. 9.4 - Prob. 19ECh. 9.4 - Prob. 20ECh. 9.4 - Prob. 21ECh. 9.4 - Prob. 22ECh. 9.4 - Prob. 23ECh. 9.4 - Prob. 24ECh. 9.4 - Prob. 25ECh. 9.4 - Prob. 26ECh. 9.4 - Prob. 27ECh. 9.4 - Straw VotesIn one state, 55% of the voters expect...Ch. 9.4 - Prob. 29ECh. 9.4 - Prob. 30ECh. 9.4 - Prob. 31ECh. 9.4 - Prob. 32ECh. 9.4 - Prob. 33ECh. 9.4 - Prob. 34ECh. 9 - Determine whether each of the following statements...Ch. 9 - Prob. 2RECh. 9 - Prob. 3RECh. 9 - Prob. 4RECh. 9 - Determine whether each of the following statements...Ch. 9 - Prob. 6RECh. 9 - Prob. 7RECh. 9 - Prob. 9RECh. 9 - Prob. 10RECh. 9 - Prob. 11RECh. 9 - Prob. 12RECh. 9 - Prob. 13RECh. 9 - Prob. 14RECh. 9 - Prob. 15RECh. 9 - Prob. 16RECh. 9 - Prob. 17RECh. 9 - Find the mean for the following. 18. 105, 108,...Ch. 9 - Prob. 19RECh. 9 - Prob. 20RECh. 9 - Prob. 21RECh. 9 - Prob. 22RECh. 9 - Prob. 23RECh. 9 - Prob. 24RECh. 9 - Prob. 25RECh. 9 - Prob. 26RECh. 9 - Prob. 27RECh. 9 - Prob. 28RECh. 9 - Find the range and standard deviation for each...Ch. 9 - Prob. 30RECh. 9 - Prob. 31RECh. 9 - Describe the characteristics of a normal...Ch. 9 - Prob. 33RECh. 9 - Find the following areas under the standard normal...Ch. 9 - Prob. 35RECh. 9 - Find the following areas under the standard normal...Ch. 9 - Find the following areas under the standard normal...Ch. 9 - Prob. 38RECh. 9 - Prob. 39RECh. 9 - Prob. 40RECh. 9 - Prob. 41RECh. 9 - Prob. 42RECh. 9 - Prob. 43RECh. 9 - Prob. 44RECh. 9 - Prob. 45RECh. 9 - Prob. 46RECh. 9 - Prob. 47RECh. 9 - Prob. 48RECh. 9 - Prob. 49RECh. 9 - Prob. 50RECh. 9 - Prob. 51RECh. 9 - Prob. 52RECh. 9 - Prob. 53RECh. 9 - Prob. 54RECh. 9 - Prob. 55RECh. 9 - Prob. 56RECh. 9 - Prob. 57RECh. 9 - Prob. 58RECh. 9 - Prob. 59RE
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