#5 needed 4. Plumber Bob does 40% of the plumbing jobs in a small town. 30% of the people in town areunhappy with their plumbers, but 50% of Bob's customers are unhappy with his work. If yourneighbor is not happy with his plumber, what is the probability that it was Bob?5. You are going to meet a friend at the airport. Your experience tells you that the plane is late 70%of the time when it rains, but is late only 20% of the time when it does not rain. The weatherforecast that morning calls for a 40% chance of rain. What is the probability that the plane will belate?6. The alpha fetal protein test is meant to detect spina bifida in unborn babies, a condition thataffects 1 out of 1,000 children who are born. The literature on the test indicates that 5% of thetime a healthy baby will cause a positive reaction. We will assume that the test is positive 100%of the time when spina bifida is present. Your doctor has just told you that your alpha fetalprotein test was positive. What is the probability that your baby has spina bifida?7. A student is taking a multiple-choice exam in which each question has four possible answers. Sheknows the answers to 60% of the questions and guesses at the others. What is the probability

Answered: Image /qna-images/answer/61526cac-ebdb-426b-890b-29f2c01f8d3b.jpg

5. You are going to meet a friend at the airport. Your experience tells you that the plane is late 70% of the time when it rains, but is late only 20% of the time when it does not rain. The weather forecast that morning calls for a 40% chance of rain.What is the probability that the plane will be late?

5. You are going to meet a friend at the airport. Your experience tells you that the plane is late 70% of the time when it rains, but is late only 20% of the time when it does not rain. The weather forecast that morning calls for a 40% chance of rain.What is the probability that the plane will be late?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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