Excursions in Modern Mathematics (9th Edition)
9th Edition
ISBN: 9780134468372
Author: Peter Tannenbaum
Publisher: PEARSON
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Chapter 15, Problem 37E
Table 15-20
| Age | 25 | 27 | 28 | 29 | 30 |
| Frequency | 2 | 7 | 6 | 9 | 15 |
| Age | 31 | 32 | 33 | 37 | 39 |
| Frequency | 12 | 9 | 9 | 6 | 4 |
This exercise refers to the age distribution in the Cleansburg fire department shown in Table 15-20 (Exercise 30).
a. Find the first quartile of the data set.
b. Find the third quartile of the data set.
c. Find the 90th percentile of the data set.
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Question 2 (3.5 points)
A firm produces a certain good. The current unit price of the good is equal to €7. At this price level,
the marginal demand is equal to -0.8 and the point elasticity of demand is equal to -0.28.
a. Give a precise economic interpretation of the number -0.8.
b. Find the exact value of the current revenue of the firm and estimate the change in revenue if
the current unit price is reduced by 3%.
Next, assume that the demand is given by an equation of the form q = a/(bp).
c. Find the values of the parameters a and b.
Answer to Question 2:
Chapter 15 Solutions
Excursions in Modern Mathematics (9th Edition)
Ch. 15 - Exercises 1 through 4 refer to the data set shown...Ch. 15 - Exercises 1 through 4 refer to the data set shown...Ch. 15 - Exercises 1 through 4 refer to the data set shown...Ch. 15 - Exercises 1 through 4 refer to the data set shown...Ch. 15 - Exercises 5 through 10 refer to Table 15-13, which...Ch. 15 - Exercises 5 through 10 refer to Table 15-13, which...Ch. 15 - Exercises 5 through 10 refer to Table 15-13, which...Ch. 15 - Exercise 5 through 10 refer to Table 15-13, which...Ch. 15 - Exercise 5 through 10 refer to Table 15-13, which...Ch. 15 - Exercise 5 through 10 refer to Table 15-13, which...
Ch. 15 - Exercise 11 and 12 refer to the bar graph shown in...Ch. 15 - Exercise 11 and 12 refer to the bar graph shown in...Ch. 15 - Exercise 13 and 14 refer to the pie chart in Fig....Ch. 15 - Exercise 13 and 14 refer to the pie chart in Fig....Ch. 15 - Table 15-14 shows the class interval frequencies...Ch. 15 - Table 15-15 shows the class interval frequencies...Ch. 15 - Table 15-16 shows the percentage of U.S. working...Ch. 15 - Table 15-17 shows the percentage of U.S. workers...Ch. 15 - Exercises 19 and 20 refer to Table 15-18, which...Ch. 15 - More than Less than or equal to Number of babies...Ch. 15 - Exercises 21 and 22 refer to the two histograms...Ch. 15 - Exercises 21 and 22 refer to the two histograms...Ch. 15 - Consider the data set {3,5,7,4,8,2,8,3,6}. a.Find...Ch. 15 - Consider the data set {4,6,8,5.2,10.4,10,12.6,13}...Ch. 15 - Find the average A and median M of each of the...Ch. 15 - Find the average A and median M of each of the...Ch. 15 - Find the average A and median M of each of the...Ch. 15 - Find the average A and median M of each of the...Ch. 15 - Table 15-19 shows the results of a 5-point musical...Ch. 15 - Table 15-20 shows the ages of the firefighters in...Ch. 15 - Table 15-21 shows the relative frequencies of the...Ch. 15 - Table 15-22 shows the relative frequencies of the...Ch. 15 - Consider the data set {5,7,4,8,2,8,3,6}. a. Find...Ch. 15 - Consider the data set {4,6,8,5.2,10.4,10,12.6,13}....Ch. 15 - For each data set, find the 75th and the 90th...Ch. 15 - For each data set, find the 10th and the 25th...Ch. 15 - Table 15-20 Age 25 27 28 29 30 Frequency 2 7 6 9...Ch. 15 - This exercise refers to the math quiz scores shown...Ch. 15 - Prob. 39ECh. 15 - Exercise 39 and 40 refer to SAT test scores for...Ch. 15 - Consider the data set {5,7,4,8,2,8,3,6}. a. Find...Ch. 15 - Consider the data set {4,6,8,5.2,10.4,10,12.6,13}....Ch. 15 - Prob. 43ECh. 15 - This exercise refers to the distribution of the...Ch. 15 - Exercises 45 and 46 refer to the two box plots in...Ch. 15 - Exercises 45 and 46 refer to the two box plots in...Ch. 15 - For the data set {5,7,4,8,2,8,3,6}, find a. the...Ch. 15 - For the data set {4,6,8,5.2,10.4,10,12.6,13}, find...Ch. 15 - A realty company has sold N=341 homes in the last...Ch. 15 - Exercise 45 and 46 refer to the box plot in...Ch. 15 - Prob. 51ECh. 15 - For Exercises 51 through 54, you should use the...Ch. 15 - For Exercises 51 through 54, you should use the...Ch. 15 - For Exercises 51 through 54, you should use the...Ch. 15 - The purpose of Exercises 55 and 56 is to practice...Ch. 15 - The purpose of Exercises 55 and 56 is to practice...Ch. 15 - Exercises 57 and 58 refer to the mode of a data...Ch. 15 - Exercises 57 and 58 refer to the mode of a data...Ch. 15 - Mikes average on the first five exams in Econ 1A...Ch. 15 - Explain each of the following statements regarding...Ch. 15 - In 2006, the median SAT score was the average of...Ch. 15 - In 2004, the third quartile SAT scores was...Ch. 15 - Prob. 63ECh. 15 - Suppose that the average of 10 numbers is 7.5 and...Ch. 15 - Prob. 65ECh. 15 - What happens to the five-number summary of the...Ch. 15 - Prob. 67ECh. 15 - Prob. 68ECh. 15 - Prob. 69ECh. 15 - Prob. 70ECh. 15 - Prob. 71ECh. 15 - Prob. 72ECh. 15 - Prob. 73ECh. 15 - Suppose that the standard deviation of the data...Ch. 15 - Chebyshevs theorem. The Russian mathematician P.L....
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