STAT. TECH. FOR BUSINESS AND ECO (LL)
18th Edition
ISBN: 9781265679637
Author: Lind
Publisher: MCG
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Chapter 5, Problem 31E
a.
To determine
Obtain the
b.
To determine
Obtain the probability that a randomly selecting junior-college student.
c.
To determine
Obtain the probability that student prefers skating if a four-year college student is selected.
d.
To determine
Obtain the probability that student is in junior college if a selected student prefers snowboarding.
e.
To determine
Obtain the probability that student prefers skiing or ice skating if a graduate college student is selected.
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Chapter 5 Solutions
STAT. TECH. FOR BUSINESS AND ECO (LL)
Ch. 5 - Prob. 1SRCh. 5 - One card will be randomly selected from a standard...Ch. 5 - Prob. 2.2SRCh. 5 - Prob. 2.3SRCh. 5 - Some people are in favor of reducing federal taxes...Ch. 5 - Prob. 2ECh. 5 - Prob. 3ECh. 5 - Prob. 4ECh. 5 - In each of the following cases, indicate whether...Ch. 5 - Prob. 6E
Ch. 5 - Prob. 7ECh. 5 - A sample of 2,000 licensed drivers revealed the...Ch. 5 - Bank of America customers select their own...Ch. 5 - Prob. 10ECh. 5 - Prob. 3SRCh. 5 - Prob. 4SRCh. 5 - Prob. 11ECh. 5 - Prob. 12ECh. 5 - Prob. 13ECh. 5 - The chair of the board of directors says, There is...Ch. 5 - Suppose the probability you will get an A in this...Ch. 5 - Two coins are tossed. If A is the event two heads...Ch. 5 - Prob. 17ECh. 5 - Prob. 18ECh. 5 - Prob. 19ECh. 5 - Prob. 20ECh. 5 - The aquarium at Sea Critters Depot contains 140...Ch. 5 - A National Park Service survey of visitors to the...Ch. 5 - From experience, Teton Tire knows the probability...Ch. 5 - The board of directors of Tarbell Industries...Ch. 5 - Refer to Table 51 on page 151 to find the...Ch. 5 - Consumers were surveyed on the relative number of...Ch. 5 - Prob. 23ECh. 5 - Prob. 24ECh. 5 - Prob. 25ECh. 5 - Prob. 26ECh. 5 - Prob. 27ECh. 5 - Prob. 28ECh. 5 - Prob. 29ECh. 5 - Prob. 30ECh. 5 - Prob. 31ECh. 5 - Prob. 32ECh. 5 - Prob. 9SRCh. 5 - Prob. 33ECh. 5 - Prob. 34ECh. 5 - Prob. 35ECh. 5 - Prob. 36ECh. 5 - The credit department of Lions Department Store in...Ch. 5 - Prob. 38ECh. 5 - Prob. 10.1SRCh. 5 - Prob. 10.2SRCh. 5 - Prob. 11.1SRCh. 5 - Prob. 11.2SRCh. 5 - Prob. 11.3SRCh. 5 - In a lottery game, three numbers are randomly...Ch. 5 - Prob. 39ECh. 5 - Prob. 40ECh. 5 - Prob. 41ECh. 5 - A telephone number consists of seven digits, the...Ch. 5 - An overnight express company must include five...Ch. 5 - A representative of the Environmental Protection...Ch. 5 - Sam Sneads restaurant in Conway, South Carolina,...Ch. 5 - A company is creating three new divisions and...Ch. 5 - The marketing research department at Pepsico plans...Ch. 5 - The number of times a particular event occurred in...Ch. 5 - The probability that the cause and the cure for...Ch. 5 - Berdines Chicken Factory has several stores in the...Ch. 5 - Prob. 51CECh. 5 - The first card selected from a standard 52-card...Ch. 5 - Prob. 53CECh. 5 - Refer to the following picture. a. What is the...Ch. 5 - Prob. 55CECh. 5 - Assume the likelihood that any flight on Delta...Ch. 5 - Prob. 57CECh. 5 - Prob. 58CECh. 5 - Prob. 59CECh. 5 - Prob. 60CECh. 5 - Prob. 61CECh. 5 - Forty percent of the homes constructed in the...Ch. 5 - Prob. 63CECh. 5 - Prob. 64CECh. 5 - Prob. 65CECh. 5 - Prob. 66CECh. 5 - Prob. 67CECh. 5 - Prob. 68CECh. 5 - Prob. 69CECh. 5 - An investor purchased 100 shares of Fifth Third...Ch. 5 - Flashner Marketing Research Inc. specializes in...Ch. 5 - Prob. 72CECh. 5 - Prob. 73CECh. 5 - Prob. 74CECh. 5 - Prob. 75CECh. 5 - Prob. 76CECh. 5 - Prob. 77CECh. 5 - Prob. 78CECh. 5 - Prob. 79CECh. 5 - Prob. 80CECh. 5 - Prob. 81CECh. 5 - Prob. 82CECh. 5 - Prob. 83CECh. 5 - Prob. 84CECh. 5 - Prob. 85CECh. 5 - Prob. 86CECh. 5 - Prob. 87CECh. 5 - ABC Auto Insurance classifies drivers as good,...Ch. 5 - Prob. 89CECh. 5 - The probability a D-Link network server is down is...Ch. 5 - Prob. 91CECh. 5 - Prob. 92DACh. 5 - Prob. 93DACh. 5 - Prob. 94DA
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- Please answer the questionsarrow_forward30. 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.arrow_forward24. 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).arrow_forward
- 59. At a certain gas station, 40% of the customers use regular gas (A1), 35% use plus gas (A2), and 25% use premium (A3). Of those customers using regular gas, only 30% fill their tanks (event B). Of those customers using plus, 60% fill their tanks, whereas of those using premium, 50% fill their tanks.a. What is the probability that the next customer will request plus gas and fill the tank (A2 B)?b. What is the probability that the next customer fills the tank?c. If the next customer fills the tank, what is the probability that regular gas is requested? Plus? Premium?arrow_forward38. Possible values of X, the number of components in a system submitted for repair that must be replaced, are 1, 2, 3, and 4 with corresponding probabilities .15, .35, .35, and .15, respectively. a. Calculate E(X) and then E(5 - X).b. Would the repair facility be better off charging a flat fee of $75 or else the amount $[150/(5 - X)]? [Note: It is not generally true that E(c/Y) = c/E(Y).]arrow_forward74. The proportions of blood phenotypes in the U.S. popula- tion are as follows:A B AB O .40 .11 .04 .45 Assuming that the phenotypes of two randomly selected individuals are independent of one another, what is the probability that both phenotypes are O? What is the probability that the phenotypes of two randomly selected individuals match?arrow_forward
- 53. A certain shop repairs both audio and video compo- nents. Let A denote the event that the next component brought in for repair is an audio component, and let B be the event that the next component is a compact disc player (so the event B is contained in A). Suppose that P(A) = .6 and P(B) = .05. What is P(BA)?arrow_forward26. A certain system can experience three different types of defects. Let A;(i = 1,2,3) denote the event that the sys- tem has a defect of type i. Suppose thatP(A1) = .12 P(A) = .07 P(A) = .05P(A, U A2) = .13P(A, U A3) = .14P(A2 U A3) = .10P(A, A2 A3) = .011Rshelfa. What is the probability that the system does not havea type 1 defect?b. What is the probability that the system has both type 1 and type 2 defects?c. What is the probability that the system has both type 1 and type 2 defects but not a type 3 defect? d. What is the probability that the system has at most two of these defects?arrow_forwardThe following are suggested designs for group sequential studies. Using PROCSEQDESIGN, provide the following for the design O’Brien Fleming and Pocock.• The critical boundary values for each analysis of the data• The expected sample sizes at each interim analysisAssume the standardized Z score method for calculating boundaries.Investigators are evaluating the success rate of a novel drug for treating a certain type ofbacterial wound infection. Since no existing treatment exists, they have planned a one-armstudy. They wish to test whether the success rate of the drug is better than 50%, whichthey have defined as the null success rate. Preliminary testing has estimated the successrate of the drug at 55%. The investigators are eager to get the drug into production andwould like to plan for 9 interim analyses (10 analyzes in total) of the data. Assume thesignificance level is 5% and power is 90%.Besides, draw a combined boundary plot (OBF, POC, and HP)arrow_forward
- Please provide the solution for the attached image in detailed.arrow_forward20 km, because GISS Worksheet 10 Jesse runs a small business selling and delivering mealie meal to the spaza shops. He charges a fixed rate of R80, 00 for delivery and then R15, 50 for each packet of mealle meal he delivers. The table below helps him to calculate what to charge his customers. 10 20 30 40 50 Packets of mealie meal (m) Total costs in Rands 80 235 390 545 700 855 (c) 10.1. Define the following terms: 10.1.1. Independent Variables 10.1.2. Dependent Variables 10.2. 10.3. 10.4. 10.5. Determine the independent and dependent variables. Are the variables in this scenario discrete or continuous values? Explain What shape do you expect the graph to be? Why? Draw a graph on the graph provided to represent the information in the table above. TOTAL COST OF PACKETS OF MEALIE MEAL 900 800 700 600 COST (R) 500 400 300 200 100 0 10 20 30 40 60 NUMBER OF PACKETS OF MEALIE MEALarrow_forwardLet X be a random variable with support SX = {−3, 0.5, 3, −2.5, 3.5}. Part ofits probability mass function (PMF) is given bypX(−3) = 0.15, pX(−2.5) = 0.3, pX(3) = 0.2, pX(3.5) = 0.15.(a) Find pX(0.5).(b) Find the cumulative distribution function (CDF), FX(x), of X.1(c) Sketch the graph of FX(x).arrow_forward
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