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If a potential customer is exposed to 4 promotions in a given month, what is the probability that the customer makes a purchase?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Suppose a very safe driver has a likelihood of getting into an accident of 1/20 every year. Calculate the probability of her getting into at least one accident in the next two years. Calculate the probability of her getting into at least one accident in the next three years.
A 10-year study conducted by the American Heart Association provided data on how age, blood pressure, and smoking relate to the risk of strokes. Data from a portion of this study follow. Risk is interpreted as the probability (times 100) that a person will have a stroke over the next 10-year period. For the smoker variable, indicates a smoker and 0 indicates a nonsmoker. Blood Risk Age Smoker Pressure 12 57 152 24 67 163 13 58 155 56 86 177 1 28 59 196 51 76 189 1 18 56 155 1 31 78 120 37 80 135 1 15 78 98 22 71 152 36 70 173 1 15 67 135 1 48 77 209 1 15 60 199 36 82 119 1 8 66 166 34 80 125 1 3 62 117 37 59 207 1 Using age, blood pressure, and whether a person is a smoker, develop an estimated regression equation that can be used to predict risk. Use x, for age, x, for blood pressure, and x, for whether a person is a smoker. (Round your constant term to one decimal place and coefficients to three decimal places.) ý =
A manufacturer of aspirin claims that the proportion of headache sufferers who get relief with just two aspirins is 63.4%. What is the probability that in a random sample of 430 headache sufferers, less than 59% obtain relief? Probability =
In August 2012, tropical storm Isaac formed in the Caribbean and was headed for the Gulf of Mexico. There was an initial probability of .69 that Isaac would become a hurricane by the time it reached the Gulf of Mexico (National Hurricane Center website, August 21, 2012). What was the probability that Isaac would not become a hurricane but remain a tropical storm when it reached the Gulf of Mexico (to 2 decimals)? Two days later, the National Hurricane Center projected the path of Isaac would pass directly over Cuba before reaching the Gulf of Mexico. Hurricanes that reach the Gulf of Mexico have a .08 probability of having passed over Cuba. Tropical storms that reach the Gulf of Mexico have a .20 probability of having passed .over Cuba. How did passing over Cuba alter the probability that Isaac would become a hurricane by the time it reached the Gulf of Mexico? Use the above probabilities to answer this question. P(C|H) (to 2 decimals) P(C|T) (to 2 decimals) P(H|C) (to 4 decimals) What…
A professor knows that her statistics students' final exam scores have a mean of 79 and a standard deviation of 12.4. In his class, an "A" is any exam score of 90 or higher. This quarter she has 25 students in her class. What is the probability that 7 students or more will score an "A" on the final exam?
Suppose the late time can be modeled as an exponential distribution with mean 3.5 minutes. If this model is accurate, find the probability of being at least seven minutes late given that is already 3.5 minutes late.
The manager of a supermarket tracked the amount of time needed for customers to be served by the cashier. After checking with his statistics professor, he concluded that the checkout times are exponentially distributed with a mean of 5 minutes. What propotion of customers require more than 10 minutes to check out?
The correct calculator command to find the probability of more than 11 successes when X∼BIN(20,0.6)X∼BIN(20,0.6) is a. binomcdf(20,0.6,11)binomcdf(20,0.6,11) b. binomcdf(20,0.6,10)binomcdf(20,0.6,10) c. 1−binomcdf(20,0.6,10)1−binomcdf(20,0.6,10) d. 1−binomcdf(20,0.6,11)1−binomcdf(20,0.6,11)
The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. Complete parts (a) and (b) below. Click the icon to view the data on business degrees. (a) Find the probability that a randomly selected student is male, given that the student received a business degree. The probability that a randomly selected student is male, given that the student received a business degree, is (Round to three decimal places as needed.)
The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. Complete parts (a) and (b) below. E Click the icon to view the data on business degrees. ..... (a) Find the probability that a randomly selected student is male, given that the student received a business degree. The probability that a randomly selected student is male, given that the student received a business degree, is (Round to three decimal places as needed.) Business Graduates (b) Find the probability that a randomly selected student received a business degree, given that the student is female. The probability that a randomly selected student received a business degree, given that the student is female, is (Round to three decimal places as needed.) Business degrees Nonbusiness degrees Total Male 199,313 600,822 800,135 1,065,757 1,865,892 Female 177,694 888,063 Total 377,007 1,488,885 Print Done
A hacker breaking into a computer system has a 15% chance of breaking into a system in 2 minutes, a 25% chance after 5 minutes, and a 60% chance after 20 minutes. What is the expected time will take the hacker to get in?
The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. Complete parts (a) and (b) below. Click the icon to view the data on business degrees. (a) Find the probability that a randomly selected student is male, given that the student received a business degree. The probability that a randomly selected student is male, given that the student received a business degree, is (Round to three decimal places as needed.) (b) Find the probability that a randomly selected student received a business degree, given that the student is female. The probability that a randomly selected student received a business degree, given that the student is female, is (Round to three decimal places as needed.) Business graduates Business degrees Nonbusiness degrees Total Male 192,167 616,454 808,621 1,056,907 1,865,528 Female 173,249 883,658 Total 365,416 1,500,112