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Good Evening, I need help with the answers. 1.) Parts 1-4? Car inspection: Of all the registered automobiles in a city, 5% fail the emissions
Good Evening, I need help with the answers.
1.) Parts 1-4?
Car inspection: Of all the registered automobiles in a city, 5% fail the emissions test. Eight automobiles are selected at random to undergo an emissions test. Round the answers to at least four decimal places. (a) Find the probability that exactly three of them fail me test. The probability that exactly three of them fail the test is I] . {b} nd the probability that fewer than three of them fail the test. The probability that fewer than three of them fail the test is B. (c) Find the probability that more than two of them fail the test. The probability that more than two of them fail the test is D. {d} Would it be unusual for none of them to fail the test?I It (Choose one) 1 be unusual for none of them to fail me test since the probability is D . Google it: According to a recent report, 66% of Internet searches in a particular month used the Google search engine. Assume that a sample of 23 searches is studied. Round the answers to at least four decimal places. (a) What is the probability that exactjy 20 of them used GoogleEI The probability that exactly 20 of them used Google is D. {b} What is the probability that 15 or fewer used Google? The probability that 15 or fewer used Google is [j . (c) What is the probability that more than 20 of them used GoogleEI The probability that more than 20 of them used l[Boogie is D. (d) Would it be unusual if fewer than 13 used Google? It be unusual if fewer than 13 used Google since the probability is D. Stress at work: In a poll about work, 47% of respondents said that their jobs were sometimes or always stressful. Fifteen workers are chosen at random. Part 1 of 2 (a) What is the mean number who find their jobs stressful in a sample of 15 workers? Round the answer to two decimal places. The mean number who find their jobs stressful is Part 2 of 2 (b) What is the standard deviation of the number who find their jobs stressful in a sample of 15 workers? Round the answer to four decimal places. The standard deviation of the number who find their jobs stressful isCollege bound: A national college researcher reported that 65% of students who graduated from high school in 2012 enrolled in college. Thirty two high school graduates are sampled. Round the answers to four decimal places. (a) What is the probability that exacy 20 of mem enroll in college? The probability that exactly 20 of them enroll in college is [:1. {b} What is the probability that more than 15 enroll in college? The probability that more than 15 enroll in college is C] . (c) What is the probability that fewer than 14 enroll in college? The probability that fewer than 14 enroll in college is C] . {d} Would it be unusual if more than 2.3 ofthem enroll in college? It be unusual if more than 23 of them enroll in college since the - probability is D. College bound: A national college researcher reported that 63% of students who graduated from high school in 2012 enrolled in college. Thirty four high school graduates are sampled. (a) What is the mean number who enroll in college in a sample of 34 high school graduates? Round the answer to two decimal places. The mean number who enroll in college in a sample of 34 high school graduates is D. (b} What is the standard deviaon of le number who enroll in college in a sample of 34 high school graduates? Round the answer to four decimal places. The standard deviation of the number who enroll in college in a sample of 34 high school graduates is DStep by Step Solution
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