In a survey on consumer spending methods, the following results were obtained. Payment Method Checks Cash Credit cards Debit/ATM cards Other Transactions, % 38 11 20 18 13 If a transaction tracked in this survey is selected at random, what is the probability that the transaction was paid for by each of the following? (a) with a credit card or with a debit/ATM card (b) with cash or some method other than with a check, a credit card, or a debit/ATM card

In a survey on consumer spending methods, the following results were obtained. Payment Method Checks Cash Credit cards Debit/ATM cards Other Transactions, % 38 11 20 18 13 If a transaction tracked in this survey is selected at random, what is the probability that the transaction was paid for by each of the following? (a) with a credit card or with a debit/ATM card (b) with cash or some method other than with a check, a credit card, or a debit/ATM card

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Payment Method	Checks	Cash	Credit cards	Debit/ATM cards	Other
Transactions, %	38	11	20	18	13

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Q. No. 3. A famous football team plays 60% of games at night and 40% during the day. The team wins 50% of the night games and 70% of the day games. According to print media reports, the team won yesterday. i. What is the probability the game was played during the day? ii. What is the probability the game was played at night?
The percentage of mechanical-, civil-, aeronautical-, industrial-, and chemical-engineer- ing students in the course, Engineering Mathematics, is, respectively, 25, 20, 15, 22, and 18. The probability of a mechanical-, civil-, aeronautical-, industrial-, and chemical-en- gineering students getting the grade A is 0.7, 0.6, 0.8, 0.5, and 0.65, respectively. If a student chosen at random at the end of the semester earned an A in the course, find the probability of the student belonging to mechanical engineering.
A police officer randomly selected 586 police records of larceny thefts. The accompanying data represent the number of offenses for various types of larceny thefts. (a) Construct a probability model for type of larceny theft. (b) Are coin-operated machine larcenies unusual? (c) Are larcenies from buildings unusual? (a) Complete the table below. Type of Larceny Theft Pocket picking Purse snatching Shoplifting From motor vehicles Motor vehicle accessories Probability Bicycles From buildings From coin-operated machines (Round to three decimal places as needed.) (b) Choose the correct answer below. Data table Type of Larceny Theft Pocket picking Purse snatching Shoplifting From motor vehicles Motor vehicle accessories Bicycles From buildings From coin-operated machines Print OA. Yes, because P(coin-operated machine) 0.05. OC. Yes, because P(larcenies from buildings) <0.5. O D. No, because the probability of an unusual event is 0. Number of Offenses 7 8 126 202 82 50 102 9 Done - X
The following table gives the percentage of students enrolled in one mathematics courses at a university. The college level transfer courses are College Algebra, Statistics, and Liberal Arts Math. PreAlgebra 5% Statistics Elementary Liberal Arts Algebra Math Intermediate Algebra %0% College Algebra 25% prials vas get A student who is taking only one mathematics course is selected. What is the probability a student is taking transfer level math? (Enter without a percent sign)
In a survey on consumer spending methods, the following results were obtained. Payment Method Checks Cash Credit cards Debit/ATM cards Other Transactions, % 37 11 20 17 15 If a transaction tracked in this survey is selected at random, what is the probability that the transaction was paid for by each of the following? (a) with a credit card or with a debit/ATM card(b) with cash or some method other than with a check, a credit card, or a debit/ATM card
A bank recently discovered that approximately 1.6% of all commercial loans issued by the bank become delinquent. Norah, the bank's vice president of operations, is stunned by this discovery. In order to be prepared for the next board meeting, she investigates the matter by randomly selecting 554 commercial loans from the bank’s database and reviewing each loan. What is the probability that at least 12 of the loans in the sample are delinquent? Use Excel to find the probability. Round your answer to four decimal places.
Review the definitions and examples of probability of events and their complementary events. A survey of 451 Salinas residents showed 389 voted in a recent election. When making a selection from the 451 surveyed, what is the probability the person voted in a recent election? When making a selection from the 451 surveyed, what is the probability the person did not vote in a recent election?
Virtually any process can be improved by use of statistics, including the law. A much publicized case that involved a debate about probability was the Collins case, which began in 1964. An incident of purse snatching in the Los Angeles area led to the arrest of Michael and Janet Collins. At their trial, an "expert" presented the probabilities listed in table below on characteristics possessed by a couple seen running from the crime scene: Characteristics Probability Man with beard 1/10 Blond woman 1/4 1/10 Yellow car Woman with ponytail Man with moustache Interracial couple 1/10 1/3 1/1000 The chance that a couple had all these characteristics together is 1 in 12 million. Because the Collinses had these characteristics, the Collinses must be guilty. Do yo see any problem with this line of reasoning? Hint: The question of interest is not "what is the probability of finding a couple with these characteristics?" because one such couple has been found (the Collinses), the question is "what…
A Yale Daily found that 49 percent of students identified themselves as liberal, 15 percent as conservative, and 36 percent as moderate. In addition, 2% of Yale Students are enrolled at the School of the Environment. Does this mean that that .15*.02=.003 or 0.3% of Yale students are Conservative Environmentalists? Explain using probability terms.
Data was collected and placed into the following table. Brown eyes Blue eyes male 10 13 female 14 15 if someone who participated in the study is randomly selected, find the following probabilities. ( please use fractions and not decimals). A. P(Male B. P( female and brown eyes) C. P(Male or brown eyes) D. P( Female l blue eyes) E. P( Brown eyes l male) show work please!
A sample of financial analysts was asked to provide forecasts of earnings per share of a corporation for next year. The results are summarized in the following table: Forecast ($ per share) frequency 9 up to 10 11 10 up to 11 14 11 up to 12 18 12 up to 13 14 13 up to 14 7 What is the probability that the forecast of earnings is between $9 and $10 per share?