Not all visitors to a certain company's website are customers. In fact, the website administrator estimates that about 12% of all visitors to the website arelooking for other websites. Assuming that this estimate is correct, find the probability that, in a random.sample of 4 visitors to the website, exactly 3 actuallyare looking for the website.Round your response to at least three decimal places. (If necessary, consult a list of formulas.)Continueaceresc%2324!@623trtabdf

Answered: Image /qna-images/answer/1f7ff02a-16a6-4b49-b759-3c2bb3d31b61.jpg

Answered: Not all visitors to a certain company's…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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At a certain University, the chance of a student receiving financial aid is 87%. 15 students are randomly and independently chosen. Use R/Rcmdr to find the probability that at most 12 of them are receiving financial aid. ROUND YOUR FINAL ANSWER TO 3 DECIMALS. Choose the most correct (closest) answer below? a.0.6916319 b.0.1204051 c.0.1879631 d.0.3083681
According to a 2009 Reader's Digest article, people throw away about 11% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 79 grocery shoppers to investigate their behavior. What is the probability that the sample proportion does not exceed 0.18?Note: Calculate z to two decimal places.Answer = (Enter your answer as a number accurate to 4 decimal places.)
A marketing company has randomly surveyed 204 men who watch professional sports. The men were separated according to their educational level (college degree or not) and whether they preferred the NBA or the National Football League (NFL). The results of the survey are shown to the right. Complete parts a through d. Sports Preference NBA College Degree 36 No College O Degree 58 NFL 19 91 a. What is the probability that a randomly selected survey participant prefers the NFL? (Round to four decimal places as needed.) b. What is the probability that a randomly selected survey participant has a college degree and prefers the NBA? (Round to four decimal places as needed.) c. Suppose a survey participant is randomly selected and you are told that he has a college degree. What is the probability that this man prefers the NFL? (Round to four decimal places as needed.) d. Is a survey participant's preference for the NBA independent of having a college degree? No. The two events are not…
The table summarizes results from 975 pedestrian deaths that were caused by automobile accidents. DriverIntoxicated? Pedestrian Intoxicated? Yes No Yes 45 74 No 285 571 If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was intoxicated or the driver was not intoxicated.Report the answer as a percent rounded to one decimal place accuracy.
According to a 2009 Reader's Digest article, people throw away approximately 17% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 114 grocery shoppers to investigate their behavior. What is the probability that the sample proportion is between 0.09 and 0.15? Answer = (Enter your answer as a number accurate to 4 decimal places.)
On average, 5.6 shoplifting incidents occur per week at an electronics store. Find the probability that exactly 4 such incidents will occur during a given week at this store. Round your answer to four decimal places. P(exactly 4) = i
The mean percent of childhood asthma prevalence in 43 cities is 2.38%. A random sample of 30 of these cities is selected. What is the probability that the mean childhood asthma prevalence for the sample is greater than 2.8%? Interpret this probability. Assume that o = 1.25%. The probability is (Round to four decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. About % of samples of 43 cities will have a mean childhood asthma prevalence greater than 2.8%. O B. About % of samples of 30 cities will have a mean childhood asthma prevalence greater than 2.38%. O C. About % of samples of 30 cities will have a mean childhood asthma prevalence greater than 2.8%. Click to select your answer(s). P Type here to search 99+ a (? 1:42 PM 4/11/2021 ho insen 144 ese & t backspace %23 3. %24 4 6. 8 2. Y W tab H. J. K pase 5 R
The table summarizes results from 975 pedestrian deaths that were caused by automobile accidents. DriverIntoxicated? Pedestrian Intoxicated? Yes No Yes 49 73 No 221 632 If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was not intoxicated.Report the answer as a percent rounded to one decimal place accuracy. prob = %
A marketing company has randomly surveyed 210 men who watch professional sports. The men were separated according to their educational level (college degree or not) and whether they preferred the NBA or the National Football League (NFL). The results of the survey are shown to the right. Complete parts a through d. a. What is the probability that a randomly selected survey participant prefers the NFL? 0.5286 (Round to four decimal places as needed.) b. What is the probability that randomly selected survey participant has a college degree and prefers the NBA? 0.1857 (Round to four decimal places as needed.) c. Suppose a survey participant is randomly selected and you are told that he has a college degree. What is the probability that this man prefers the NFL? (Round to four decimal places as needed.) C Sports Preference NBA NFL College No College Degree 39 13 Degree 60 98
According to a 2009 Reader's Digest article, people throw away about 9% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 180 grocery shoppers to investigate their behavior. What is the probability that the sample proportion does not exceed 0.15? (Enter your answer as a number accurate to 4 decimal places.) Answer =
A vaccine has a 87% probability of being effective in preventing disease. The probability of getting the disease if a person is not vaccinated is 46%. In a certain geographic region, 21% of the people get vaccinated. If a person is selected at random, find the probability that he or she will contract the disease. Round your answer to three decimal places. Also, draw a tree diagram or a table to support your work.
The table lists the smoking habits of a group of college students. Regular Smoker Heavy Smoker Total 173 222 395 Sex Non-smoker Man Woman Total 135 187 322 OA. 0.942 OB. 0.911 OC. 0.945 O D. 0.863 33 21 54 5 14 19 If a student is chosen at random, find the probability of getting someone who is a man or a non-smoker. Round your answer to three decimal places. C

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