Finite Mathematics for the Managerial, Life, and Social Sciences-Custom Edition
11th Edition
ISBN: 9781305283831
Author: Tan
Publisher: Cengage Learning
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Chapter 8.4, Problem 14E
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To compare two elementary schools regarding teaching of reading skills, 12 sets of identical twins were used. In each case, one child was selected at random and sent to school A, and his or her twin was sent to school B. Near the end of fifth grade, an achievement test was given to each child. The results follow:
Twin Pair
1
2
3
4
5
6
School A
169
157
115
99
119
113
School B
123
157
112
99
121
122
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7
8
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10
11
12
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School B
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90
124
140
142
102
Suppose a sign test for matched pairs with a 1% level of significance is used to test the hypothesis that the schools have the same effectiveness in teaching reading skills against the alternate hypothesis that the schools have different levels of effectiveness in teaching reading skills. Let p denote portion of positive signs when the scores of school B are subtracted from the corresponding scores of school…
A horse trainer teaches horses to jump by using two methods of instruction. Horses being taught by method A have a lead horse that accompanies each jump. Horses being taught by method B have no lead horse. The table shows the number of training sessions required before each horse performed the jumps properly.
Method A
25
23
39
29
37
20
Method B
41
21
46
42
24
44
Method A
45
35
27
31
34
49
Method B
26
43
47
32
40
Use a rank-sum test with a5% level of significance to test the claim that there is no difference between the training sessions distributions. If the value of the sample test statistic R, the rank-sum, is 150, calculate the P-value. Round your answer to four decimal places.
A data processing company has a training program for new salespeople. After completing the training program, each trainee is ranked by his or her instructor. After a year of sales, the same class of trainees is again ranked by a company supervisor according to net value of the contracts they have acquired for the company. The results for a random sample of 11 salespeople trained in the last year follow, where x is rank in training class and y is rank in sales after 1 year. Lower ranks mean higher standing in class and higher net sales.
Person
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x rank
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11
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y rank
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y rank
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Using a 1% level of significance, test the claim that the relation between x and y is monotone (either increasing or decreasing). Verify that the Spearman rank correlation coefficient . This implies that the P-value lies between 0.002 and 0.01. State…
Chapter 8 Solutions
Finite Mathematics for the Managerial, Life, and Social Sciences-Custom Edition
Ch. 8.1 - What is a random variable? Give an example.Ch. 8.1 - Prob. 2CQCh. 8.1 - Prob. 3CQCh. 8.1 - Three balls are selected at random without...Ch. 8.1 - 2.A coin is tossed four times. Let the random...Ch. 8.1 - A die is rolled repeatedly until a 6 falls...Ch. 8.1 - Cards are selected one at a time without...Ch. 8.1 - Prob. 5ECh. 8.1 - Prob. 6ECh. 8.1 - Prob. 7E
Ch. 8.1 - Prob. 8ECh. 8.1 - Prob. 9ECh. 8.1 - In Exercises 7-12, give the range of values that...Ch. 8.1 - Prob. 11ECh. 8.1 - Prob. 12ECh. 8.1 - Prob. 13ECh. 8.1 - Prob. 14ECh. 8.1 - In Exercises 13-16, determine whether the table...Ch. 8.1 - Prob. 16ECh. 8.1 - Prob. 17ECh. 8.1 - In Exercises 17-18, find conditions on the numbers...Ch. 8.1 - Prob. 19ECh. 8.1 - Prob. 20ECh. 8.1 - Prob. 21ECh. 8.1 - EXAMS An examination consisting of ten...Ch. 8.1 - Two dice are rolled. Let the random variable X...Ch. 8.1 - Prob. 24ECh. 8.1 - Prob. 25ECh. 8.1 - DISTRIBUTION OF FAMILIES BY SIZE The Public...Ch. 8.1 - WAITNG LINES The accompanying data were obtained...Ch. 8.1 - TELEVISION PILOTS After the private screening of a...Ch. 8.1 - Prob. 29ECh. 8.1 - Prob. 30ECh. 8.1 - Prob. 31ECh. 8.1 - Prob. 32ECh. 8.1 - Prob. 33ECh. 8.1 - Prob. 34ECh. 8.1 - Prob. 35ECh. 8.1 - Prob. 36ECh. 8.1 - Prob. 1TECh. 8.1 - Prob. 2TECh. 8.1 - Prob. 3TECh. 8.1 - Prob. 4TECh. 8.1 - Prob. 5TECh. 8.1 - Prob. 6TECh. 8.1 - Prob. 7TECh. 8.1 - Prob. 8TECh. 8.1 - Prob. 9TECh. 8.1 - Prob. 10TECh. 8.2 - What is the expected value of a random variable?...Ch. 8.2 - Prob. 2CQCh. 8.2 - Prob. 3CQCh. 8.2 - Prob. 1ECh. 8.2 - Find the expected value of a random variable X...Ch. 8.2 - CALCULATING GPA During the first year at a...Ch. 8.2 - Prob. 4ECh. 8.2 - Prob. 5ECh. 8.2 - CAFETERIA MILK CONSUMPTION Records kept by the...Ch. 8.2 - EXPECTED EARNINGS The daily earnings X of an...Ch. 8.2 - EXPECTED NUMBER OF DEFECTIVE PRODUCTS If a sample...Ch. 8.2 - EXPECTED NUMBER OF AUTO ACCIDENTS The numbers of...Ch. 8.2 - EXPECTED DEMAND FOR MAGAZINES The owner of a...Ch. 8.2 - Prob. 11ECh. 8.2 - Prob. 12ECh. 8.2 - Prob. 13ECh. 8.2 - Prob. 14ECh. 8.2 - EXPECTED VALUE OF A LOTTERY TICKET In a lottery,...Ch. 8.2 - LIFE INSURANCE PREMIUMS A man wishes to purchase a...Ch. 8.2 - Prob. 17ECh. 8.2 - LIFE INSURANCE PREMIUMS As a fringe benefit,...Ch. 8.2 - Prob. 19ECh. 8.2 - Prob. 20ECh. 8.2 - Prob. 21ECh. 8.2 - EXPECTED AUTO SALES OF A DEALERSHIP Roger Hunt...Ch. 8.2 - EXPECTED HOME SALES OF A REALTOR Sally Leonard, a...Ch. 8.2 - Prob. 24ECh. 8.2 - Prob. 25ECh. 8.2 - Prob. 26ECh. 8.2 - Prob. 27ECh. 8.2 - Prob. 28ECh. 8.2 - Prob. 29ECh. 8.2 - Prob. 30ECh. 8.2 - Prob. 31ECh. 8.2 - Prob. 32ECh. 8.2 - Prob. 33ECh. 8.2 - Prob. 34ECh. 8.2 - Prob. 35ECh. 8.2 - Prob. 36ECh. 8.2 - Prob. 37ECh. 8.2 - Prob. 38ECh. 8.2 - Prob. 39ECh. 8.2 - ODDS OF WINNING A BOXING MATCH If a sports...Ch. 8.2 - Prob. 41ECh. 8.2 - Prob. 42ECh. 8.2 - Prob. 43ECh. 8.2 - Prob. 44ECh. 8.2 - Prob. 45ECh. 8.2 - SAN FRANCISCO WEATHER The normal daily minimum...Ch. 8.2 - Prob. 47ECh. 8.2 - Prob. 48ECh. 8.2 - Prob. 49ECh. 8.2 - Prob. 50ECh. 8.2 - Prob. 51ECh. 8.2 - Prob. 52ECh. 8.2 - In Exercises 52 and 53, determine whether the...Ch. 8.3 - a. What is the variance of a random variable X? b....Ch. 8.3 - Prob. 2CQCh. 8.3 - Prob. 1ECh. 8.3 - In Exercises 1-6, the probability distribution of...Ch. 8.3 - Prob. 3ECh. 8.3 - Prob. 4ECh. 8.3 - Prob. 5ECh. 8.3 - Prob. 6ECh. 8.3 - Prob. 7ECh. 8.3 - Prob. 8ECh. 8.3 - In Exercises 9 and 10, find the variance of the...Ch. 8.3 - Prob. 10ECh. 8.3 - An experiment consists of rolling an eight-sided...Ch. 8.3 - Happiness Score The happiness score, by...Ch. 8.3 - Prob. 13ECh. 8.3 - INVESTMENT ANALYSIS Paul Hunt is considering two...Ch. 8.3 - Prob. 15ECh. 8.3 - The distribution of the number of chocolate chips...Ch. 8.3 - Prob. 17ECh. 8.3 - Prob. 18ECh. 8.3 - STUCK IN TRAFFIC The following table gives the...Ch. 8.3 - COST OF TAKING TIME OFF A survey was conducted of...Ch. 8.3 - Prob. 21ECh. 8.3 - NEW YORK STATE COURTS' TOTAL CASELOAD The...Ch. 8.3 - Prob. 23ECh. 8.3 - IDENTITY FRAUD The identity fraud rates in the...Ch. 8.3 - Prob. 25ECh. 8.3 - Prob. 26ECh. 8.3 - Prob. 27ECh. 8.3 - Prob. 28ECh. 8.3 - Prob. 29ECh. 8.3 - Prob. 30ECh. 8.3 - Prob. 31ECh. 8.3 - Prob. 32ECh. 8.3 - Prob. 33ECh. 8.3 - Prob. 34ECh. 8.3 - Prob. 35ECh. 8.3 - Prob. 36ECh. 8.3 - Prob. 37ECh. 8.3 - Prob. 38ECh. 8.3 - Prob. 39ECh. 8.3 - Prob. 40ECh. 8.3 - A Probability distribution has mean of 42 and a...Ch. 8.3 - A Probability distribution has mean of 20 and a...Ch. 8.3 - Prob. 43ECh. 8.3 - Prob. 44ECh. 8.3 - Prob. 45ECh. 8.3 - Prob. 46ECh. 8.3 - Prob. 47ECh. 8.3 - Prob. 48ECh. 8.3 - Prob. 49ECh. 8.3 - Prob. 50ECh. 8.3 - Prob. 1TECh. 8.3 - Prob. 2TECh. 8.3 - Prob. 3TECh. 8.3 - Prob. 4TECh. 8.3 - Prob. 5TECh. 8.3 - Prob. 6TECh. 8.3 - Prob. 7TECh. 8.3 - Prob. 8TECh. 8.4 - Suppose that you are given a Bernoulli experiment....Ch. 8.4 - Prob. 2CQCh. 8.4 - Prob. 1ECh. 8.4 - Prob. 2ECh. 8.4 - Prob. 3ECh. 8.4 - Prob. 4ECh. 8.4 - Prob. 5ECh. 8.4 - Prob. 6ECh. 8.4 - Prob. 7ECh. 8.4 - Prob. 8ECh. 8.4 - Prob. 9ECh. 8.4 - Prob. 10ECh. 8.4 - Prob. 11ECh. 8.4 - In Exercises 1116, use the formula C(n,x)pxqnx to...Ch. 8.4 - Prob. 13ECh. 8.4 - Prob. 14ECh. 8.4 - Prob. 15ECh. 8.4 - Prob. 16ECh. 8.4 - Prob. 17ECh. 8.4 - Prob. 18ECh. 8.4 - A binomial experiment consists of five independent...Ch. 8.4 - FAMILY COMPOSITION Let the random variable X...Ch. 8.4 - Prob. 21ECh. 8.4 - SPORTS If the probability that a certain tennis...Ch. 8.4 - Prob. 23ECh. 8.4 - VOTERS In a certain congressional district. it is...Ch. 8.4 - Prob. 25ECh. 8.4 - Prob. 26ECh. 8.4 - RESTAURANT HEALTH CODE VIOLATIONS Suppose 30 of...Ch. 8.4 - Prob. 28ECh. 8.4 - EXAMS A psychology quiz consists of ten...Ch. 8.4 - Prob. 30ECh. 8.4 - Prob. 31ECh. 8.4 - MAKING FRIENDS In a survey of 2541 adults aged 18...Ch. 8.4 - EXAMS A biology quiz consists of eight...Ch. 8.4 - Prob. 34ECh. 8.4 - Prob. 35ECh. 8.4 - CONSUMER PREFERENCES An advertisement for Brand A...Ch. 8.4 - Prob. 37ECh. 8.4 - Prob. 38ECh. 8.4 - BLOOD PRESSURE A study conducted in 2012...Ch. 8.4 - Prob. 40ECh. 8.4 - Prob. 41ECh. 8.4 - WORKING WITH A SPOUSE In a survey of 1147 small...Ch. 8.4 - Prob. 43ECh. 8.4 - Prob. 44ECh. 8.4 - ROBOT RELIABILITY An automobile manufacturing...Ch. 8.4 - Prob. 46ECh. 8.4 - Prob. 47ECh. 8.4 - Prob. 48ECh. 8.4 - Prob. 49ECh. 8.4 - Prob. 50ECh. 8.4 - Prob. 51ECh. 8.4 - Prob. 52ECh. 8.4 - Prob. 53ECh. 8.4 - Prob. 54ECh. 8.4 - Prob. 55ECh. 8.4 - Prob. 56ECh. 8.4 - Prob. 57ECh. 8.4 - Prob. 58ECh. 8.4 - Prob. 59ECh. 8.4 - Prob. 60ECh. 8.4 - Prob. 61ECh. 8.4 - Prob. 62ECh. 8.5 - Consider the following normal curve with mean and...Ch. 8.5 - Prob. 2CQCh. 8.5 - Prob. 1ECh. 8.5 - Prob. 2ECh. 8.5 - Prob. 3ECh. 8.5 - Prob. 4ECh. 8.5 - Prob. 5ECh. 8.5 - Prob. 6ECh. 8.5 - Prob. 7ECh. 8.5 - Prob. 8ECh. 8.5 - Prob. 9ECh. 8.5 - In Exercise 714, a make a sketch of the area under...Ch. 8.5 - Prob. 11ECh. 8.5 - Prob. 12ECh. 8.5 - Prob. 13ECh. 8.5 - Prob. 14ECh. 8.5 - Prob. 15ECh. 8.5 - Prob. 16ECh. 8.5 - Prob. 17ECh. 8.5 - Prob. 18ECh. 8.5 - Prob. 19ECh. 8.5 - Prob. 20ECh. 8.6 - Prob. 1CQCh. 8.6 - Prob. 2CQCh. 8.6 - Medical Records The medical record of infant...Ch. 8.6 - Prob. 2ECh. 8.6 - Prob. 3ECh. 8.6 - Prob. 4ECh. 8.6 - IQsThe IQs of students at Wilson Elementary School...Ch. 8.6 - Prob. 6ECh. 8.6 - Prob. 7ECh. 8.6 - Prob. 8ECh. 8.6 - WARRANTIES The general manager of the service...Ch. 8.6 - Prob. 10ECh. 8.6 - GRADE DISTRIBUTION The score on a sociology...Ch. 8.6 - HIGHWAY SPEEDS The speeds in miles per hour of...Ch. 8.6 - In Exercise 13-24, use the appropriate normal...Ch. 8.6 - Prob. 14ECh. 8.6 - Prob. 15ECh. 8.6 - CHANCE OF MAKING A FREE THROW A basketball player...Ch. 8.6 - Prob. 17ECh. 8.6 - TELEMARKETING Jorge sells magazine subscription...Ch. 8.6 - Prob. 19ECh. 8.6 - Prob. 20ECh. 8.6 - Prob. 21ECh. 8.6 - Prob. 22ECh. 8.6 - CRUISE SHIP BOOKINGS Because of late...Ch. 8.6 - Prob. 24ECh. 8.CRQ - Fill in the blanks. A rule that assigns a number...Ch. 8.CRQ - Prob. 2CRQCh. 8.CRQ - Prob. 3CRQCh. 8.CRQ - Prob. 4CRQCh. 8.CRQ - Prob. 5CRQCh. 8.CRQ - Prob. 6CRQCh. 8.CRQ - Fill in the blanks. A probability distribution...Ch. 8.CRQ - Prob. 8CRQCh. 8.CRE - Prob. 1CRECh. 8.CRE - LIFE INSURANCE POLICIES A man purchased a 25,000,...Ch. 8.CRE - Prob. 3CRECh. 8.CRE - Prob. 4CRECh. 8.CRE - In Exercises 5-8, let Z be the standard normal...Ch. 8.CRE - Prob. 6CRECh. 8.CRE - Prob. 7CRECh. 8.CRE - Prob. 8CRECh. 8.CRE - In Exercises 9-12, let Z be the standard normal...Ch. 8.CRE - Prob. 10CRECh. 8.CRE - Prob. 11CRECh. 8.CRE - Prob. 12CRECh. 8.CRE - Prob. 13CRECh. 8.CRE - Prob. 14CRECh. 8.CRE - Prob. 15CRECh. 8.CRE - Prob. 16CRECh. 8.CRE - DRIVING AGE REQUIREMENTS The minimum age...Ch. 8.CRE - Prob. 18CRECh. 8.CRE - TRAFFIC A traffic survey of the speed of the...Ch. 8.CRE - EXPECTED PROFIT A buyer for Discount Fashions, an...Ch. 8.CRE - BOWLING A STRIKE If the probability that a bowler...Ch. 8.CRE - HEIGHTS OF WOMEN The heights of 4000 women who...Ch. 8.CRE - Prob. 23CRECh. 8.CRE - NETFLIX REVENUE FROM STREAMING SUBSCRIBERS The...Ch. 8.CRE - Prob. 25CRECh. 8.CRE - Prob. 26CRECh. 8.CRE - Prob. 27CRECh. 8.CRE - Prob. 28CRECh. 8.CRE - Prob. 29CRECh. 8.CRE - ON-TIME ARRIVALS Diane, who commutes regularly...Ch. 8.CRE - Prob. 31CRECh. 8.CRE - Prob. 32CRECh. 8.BMO - Prob. 1BMOCh. 8.BMO - Prob. 2BMOCh. 8.BMO - Prob. 3BMOCh. 8.BMO - Prob. 4BMOCh. 8.BMO - Prob. 5BMOCh. 8.BMO - A fair coin is tossed 30 times. Using the...
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