EBK CONTEMPORARY MATHEMATICS FOR BUSINE
8th Edition
ISBN: 9781305888715
Author: Brechner
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 9.I, Problem 8RE
Mary Jo Prenaris is an office manager with gross earnings of $1,600 semimonthly. If her company switches pay schedules from semimonthly to biweekly, what are Mary Jo’s new gross earnings?
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For unemployed persons in the United States, the average number of months of unemployment at the end of December 2009 was approximately seven months (Bureau of Labor Statistics, January 2010). Suppose the following data are for a particular region in upstate New York. The values in the first column show the number of
months unemployed and the values in the second column show the corresponding number of unemployed persons.
Months
Unemployed
Number
Unemployed
1
1029
2
1686
3
2269
4
2675
5
3487
6
4652
7
4145
8
3587
9
2325
10
1120
Let x be a random variable indicating the number of months a person is unemployed.
a. Use the data to develop an empirical discrete probability distribution for x (to 4 decimals).
(x)
f(x)
1
2
3
4
5
6
7
8
9
10
b. Show that your probability distribution satisfies the conditions for a valid discrete probability distribution.
The input in the box below will not be graded, but may be reviewed and considered by your instructor.
blank
c. What is the probability that a…
West Virginia has one of the highest divorce rates in the nation, with an annual rate of approximately 5 divorces per 1000 people (Centers for Disease Control and Prevention website, January 12, 2012). The Marital Counseling Center, Inc. (MCC) thinks that the high divorce rate in the state may require them to hire additional staff.
Working with a consultant, the management of MCC has developed the following probability distribution for x = the number of new clients for marriage counseling for the next year.
Excel File: data05-19.xls
x
10
f(x)
.05
20
30
.10
.10
40
.20
50
60
.35
.20
a. Is this probability distribution valid?
- Select your answer-
Explain.
f(x)
Σf(x)
Select your answer
Select your answer
b. What is the probability MCC will obtain more than 30 new clients (to 2 decimals)?
c. What is the probability MCC will obtain fewer than 20 new clients (to 2 decimals)?
d. Compute the expected value and variance of x.
Expected value
Variance
clients per year
squared clients per year
Chapter 9 Solutions
EBK CONTEMPORARY MATHEMATICS FOR BUSINE
Ch. 9.I - An executive of a large manufacturing company...Ch. 9.I - Rick Morton works as a delivery truck driver for...Ch. 9.I - George Lopez works at a tire manufacturing plant....Ch. 9.I - You are the payroll manager for Trendy Toys, Inc.,...Ch. 9.I - Alexa Walsh sells for Supreme Designs, a...Ch. 9.I - Mike Lamb sells copiers for Royal Business...Ch. 9.I - Ed Diamond is a sales representative for Jersey...Ch. 9.I - Howard Lockwood sells for Catalina Designs, Inc....Ch. 9.I - Calculate the gross earnings per pay period for...Ch. 9.I - Calculate the gross earnings per day period for...
Ch. 9.I - Calculate the gross earnings per pay period for...Ch. 9.I - Calculate the gross earnings per day period for...Ch. 9.I - Prob. 5RECh. 9.I - Calculate the gross earnings per pay period for...Ch. 9.I - Prob. 7RECh. 9.I - Mary Jo Prenaris is an office manager with gross...Ch. 9.I - 9. Deb O’Connell is an accounting professional...Ch. 9.I - 10. Jennifer Brunner works 40 hours per week as a...Ch. 9.I - 11. Alan Kimball earns $22.34 per hour as a...Ch. 9.I - 12. Paul Curcio earns $8.25 per hour for regular...Ch. 9.I - Prob. 13RECh. 9.I - As the payroll manager for Stargate Industries,...Ch. 9.I - Prob. 15RECh. 9.I - As the payroll manager for Stargate Industries,...Ch. 9.I - Prob. 17RECh. 9.I - Calculate last week’s total gross pay for each of...Ch. 9.I - Prob. 19RECh. 9.I - Prob. 20RECh. 9.I - 21. Katrina Byrd assembles motor mounts for C-207...Ch. 9.I - 22. Bob Farrell works for a company that...Ch. 9.I - 23. What is the total gross pay for a salesperson...Ch. 9.I - Pamela Mello is paid on an incremental commission...Ch. 9.I - Dory Schrader is a buyer for Oceans of Notions....Ch. 9.I - Thomas Rendells company pays him a straight 6%...Ch. 9.I - 27. Katie Jergens works for Dynamic Designs...Ch. 9.I - 28. Jerry King is a server in a restaurant that...Ch. 9.II - What are the withholdings for social security and...Ch. 9.II - Rick Nicotera has year-to-date earnings of...Ch. 9.II - Jan McMillan is married, claims five exemptions,...Ch. 9.II - Using the combined wage bracket tables, what is...Ch. 9.II - Solve the following problems using 6.2%, up to...Ch. 9.II - Solve the following problems using 6.2%, up to...Ch. 9.II - Solve the following problems using 6.2%, up to...Ch. 9.II - Solve the following problems using 6.2%, up to...Ch. 9.II - As the payroll manager for Freeport enterprises,...Ch. 9.II - As the payroll manager for Freeport enterprises,...Ch. 9.II - As the payroll manager for Freeport enterprises,...Ch. 9.II - As the payroll manager for Freeport enterprises,...Ch. 9.II - Use the percentage method of income tax...Ch. 9.II - Use the percentage method of income tax...Ch. 9.II - Prob. 11RECh. 9.II - Use the percentage method of income tax...Ch. 9.II - Use the combined wage bracket tables, Exhibits 9-3...Ch. 9.II - Use the combined wage bracket tables, Exhibits 9-3...Ch. 9.II - Use the combined wage bracket tables, Exhibits 9-3...Ch. 9.II - Marital Withholding Gross Combined Employee Status...Ch. 9.II - Prob. 17RECh. 9.II - ...Ch. 9.II - Marital Withholding Gross Combined Employee Status...Ch. 9.III - Big Pine Tree Service has 18 employees, 12 with...Ch. 9.III - Les Roberts, a self-employed commercial artist,...Ch. 9.III - Prob. 15TIECh. 9.III - Prob. 16TIECh. 9.III - Prob. 17TIECh. 9.III - Prob. 1RECh. 9.III - Prob. 2RECh. 9.III - 3. Arrow Asphalt & Paving Company has 24...Ch. 9.III - What are the social security and Medicare taxes...Ch. 9.III - 5. What are the social security and Medicare taxes...Ch. 9.III - Lee Sutherlin is a self-employed electrical...Ch. 9.III - Prob. 7RECh. 9.III - Prob. 8RECh. 9.III - Prob. 9RECh. 9.III - 10. Amazon Appliance Company has three installers....Ch. 9.III - Jiffy Janitorial Service employs 48 workers and...Ch. 9.III - North Beach Limousine Service employs 166 workers...Ch. 9.III - Marc Batchelor, a self-employed sales consultant,...Ch. 9 - Gross pay is the amount of earnings before payroll...Ch. 9 - 2. Annual salaries are commonly prorated to be...Ch. 9 - Prob. 3CRCh. 9 - Prob. 4CRCh. 9 - Prob. 5CRCh. 9 - 6. A draw against commission is commission paid in...Ch. 9 - Prob. 7CRCh. 9 - Prob. 8CRCh. 9 - In addition to social security and Medicare tax...Ch. 9 - Prob. 10CRCh. 9 - Prob. 11CRCh. 9 - Prob. 12CRCh. 9 - A plan whereby employees are given a menu of...Ch. 9 - Prob. 14CRCh. 9 - 1. Bill Pearson earns $2,800 semimonthly as a...Ch. 9 - 2. Barbara Sultan works 40 hours per week as a...Ch. 9 - Eric Shotwells company pays him $18.92 per hour...Ch. 9 - 4. Mitch Anderson is a security guard. He earns...Ch. 9 - 5. Fergie Nelson assembles toasters for the Gold...Ch. 9 - Prob. 6ATCh. 9 - Calculate the gross earnings for the following...Ch. 9 - Prob. 8ATCh. 9 - Calculate the gross earnings for the following...Ch. 9 - Prob. 10ATCh. 9 - Calculate the gross earnings for the following...Ch. 9 - Calculate the gross earnings for the following...Ch. 9 - Solve the following problems using 6.2% up to...Ch. 9 - Solve the following problems using 6.2% up to...Ch. 9 - Use the percentage method to solve the...Ch. 9 - Use the combined wage bracket tables. Exhibits 9-3...Ch. 9 - Use the combined wage bracket tables. Exhibits 9-3...Ch. 9 - Prob. 18ATCh. 9 - Prob. 19ATCh. 9 - 20. Paul Warren is a self-employed mechanic. Last...Ch. 9 - Tim Ries earns $48,320 annually as a supervisor...Ch. 9 - 22. Universal Exporting has three warehouse...Ch. 9 - Sky High Crane Company employs 150 workers and has...Ch. 9 - 24. Ransford Alda is a self-employed security...
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