Benefits of Exercise According to a study in a medical journal, 202 of a sample of 5,990 middle-aged men had developed diabetes. It also found that men whowere very active (burning about 3,500 calories daily) were a fourth as likely to develop diabetes compared with men who were sedentary. Assume that one-half ofall middle-aged men are very active, and the rest are classified as sedentary. What is the probability that a middle-aged man with diabetes is very active? (Roundyour answer to four decimal places.)Need Help?Read ItWatch ItSubmit Answer

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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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In a recent study about the effects of obesity on blood pressure, 219 at risk patients were sampled, 90 of whom were obese, 73 of whom had high blood pressure (i.e., hypertension), and 61 of whom were obese with hypertension. a. What is the probability that a randomly-selected patient is obese or is diagnosed with hypertension? P (Obese or Hypertension): Round to 3 significant digits b. What is the probability that a randomly-selected patient is not at an increased risk (i.e. not have both effects simultaneously)? P(Not at an increased risk): Round to 3 significant digits L SUBMIT QUESTION SAVE PROGRESS SUBN
An insurance company found that 2.4% of male drivers between the ages of 18 and 25 are involved in serious accidents annually. To simplify the analysis, assume that every such accident costs the insurance company $62,000 and that a driver can only have one of these accidents in a year. Complete parts (a) through (c). (a) If the company charges $2,600 for such coverage, what is the chance that it loses money on a single policy? P(loses money)= .024 (Type an integer or a decimal.) (b) Suppose that the company writes 1,000 such policies to a collection of drivers. What is the probability that the company makes a profit on these policies? Assume that the drivers don't run into each other and behave independently. P(profit) = .976 (Round to five decimal places as needed.)
Every year, the vetrinary hospital at a major research university treats a number of horses that have stones called enteroliths in their guts. AS sample of 20 years shows that on average about 2% of horses presenting at the veterinary hospital are treated for enteroliths. Some breeds of horses seem more prone to developing enteroliths than others. Below is a table with the distribution of enteroliths among the breeds. breed Fijian Thoroughbred Morgan Quarter Horse probability 0.4 0.2 0.3 ? The probability that a horse arriving at the veterinary hospital is not a Fijian, Thoroughbred, or a Quarter horse is?
Benefits of Exercise According to a study in The New England Journal of Medicine, 86 202 of a sample of 5,990 middle-aged men had developed diabetes. It also found that men who were very active (burning about 3,500 calories daily) were half as likely to develop diabetes compared with men who were sedentary. Assume that one third of all middleaged men are very active, and the rest are classified as sedentary. What is the probabilitythat a middle-aged man with diabetes is very active?
• According to data published by the international data security company, Blancco, 27.0% of iPhone 65 devices brought in to mobile carriers and processing companies utilizing Blancco's services between August 1, 2018 and October 30, 2018 were found to have diagnostic issues. If 30 iPhone 6S devices brought in to one of these hundreds of mobile carriers were randomly selected, what is the probability that at least one iPhone 6S will have diagnostic issues?
A global research study found that the majority of today's working women would prefer a better work-life balance to an increased salary. One of the most important contributors to work-life balance identified by the survey was "flexibility," with 47% of women saying that having a flexible work schedule is either very important or extremely important to their career success. Suppose you select a sample of 100 working women What is the probability that in the sample more than 50% say that having a flexible work schedule is either very important or extremely important to their career success? round to four decimal places
Based on data from AMSC Online Instruction project, 77% of adult learners use social network sites. If two adult learners are randomly selected, what is the probability that they use social network
Five percent of all blue ray players manufactured by a large electronics company are defective. A quality control inspector randomly selects three players from the production line. What is the probability that exactly one of these three blue ray players is defective?
A pharmaceutical company is running trials on a new test for anabolic steroids. The company uses the test on 400 athletes known to be using steroids and 200 athletes known not to be using steroids. Of those using steroids, the new test is positive for 375 and negative for 25. Of those not using steroids, the test is positive for 25 and negative for 175. What is the relative frequency of a false negative result (the probability that an athlete using steroids will test negative)? (Round your answer to two decimal places.) What is the relative frequency of a false positive result (the probability that an athlete not using steroids will test positive)? (Round your answer to two decimal places.)
In a particular survey of internet users, 3575 respondents say that they use social networking sites and 1348 respondents say that they do not use social networking sites. What is the probability that a randomly selected person uses a social networking site? Does that result suggest that it is likely (with a probability of 0.5 or greater) for someone to use social networking sites? The probability that a randomly selected person uses a social networking site i
The article “Unmarried Couples More Likely to Be Interracial” (San Luis Obispo Tribune, March 13, 2002) reported that 7% of married couples in the United States are mixed racially or ethnically. Consider the population consisting of all married couples in the United States. When the n = 200, what is the probability that the proportion of couples in the sample who are racially or ethinically mixed will be greated than .10?

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