In a physical fitness test it is known that the probability that a person passes it satisfactorily is 0.80. If 8 people take the test, calculate the probability that at least 4 people fail the test.
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In a physical fitness test it is known that the probability that a person passes it satisfactorily is 0.80. If 8 people take the test, calculate the probability that at least 4 people fail the test.
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- Find the probability that more than 68% of the sampled adults drink coffee daily.At LSU the probability that a student takes first semester calculus and first semester physics is 0.6. The probability that a student takes first semester calculus given that the student takes first semester physics is 0.88. Find the probability that a student takes first semester physics.In a large population, 60% of the people have been vaccinated. If 5 people are randomly selected, what is the probability that at least one of them has been vaccinated?Give your answer as a decimal to 4 places.
- The probability that Luis will pass his statistic test is 0.62. Find the probability that he will fail his statistic test.A nervous kicker usually makes 69% of his first field goal attempts. If he makes his first attempt, his success rate rises to 94%. What is the probability that he makes his first two kicks? The probability that the kicker makes his first two kicks is (Round to three decimal places as needed.)A certain disease has an incidence rate of 0.7%. If the false negative rate is 8% and the false positive rate is 4%, compute the probability that a person who tests positive actually has the disease.
- A company offers guided tours of remote areas of the world. Each tour consists of 20 people. The probability of selling a ticket for any given spot on the tour is 0.86. The costs to the company are approximately the same regardless of the number of people that show up. To offset the risk associated with a tour not filling up, the company purchases a specialized insurance policy. The policy pays 100 for each ticket that is left unsold, up to a maximum of 400. Let P be the amount that the insurance policy pays to the company for a specific tour. Calculate E[P] to the nearest dollar. O 251 O244 O 259 O 267 275In a large population, 69% of the people have been vaccinated. If 3 people are randomly selected, what is the probability that at least one of them has been vaccinated? Give your answer as a decimal to 4 places.Approximately 2 percent of Americans ages 50-60 have lung cancer. A patient with lung cancer has a 91 percent chance of a positive test. A patient without lung cancer has a 8 percent chance of a positive test (a false positive result). Complete the table below, then answer the questions below the table. Give all answers as decimals to 4 decimal places. Positive test result Negative test result Total Has lung cancer Does not have lung cancer Total What is the probability a patient has lung cancer given that she just had a positive test? Give answer as decimals to 4 decimal places.
- The airline knows that about 7 percent of those who buy a plane ticket do not arrive for the flight. The plane has seats for 250 passengers, but the airline has sold 265 tickets. Approximate the probability that there will be enough seats for everyone arriving on the flight.A blood test indicates the presence of a particular disease 98% of the time when the disease is actually present. The same test indicates the presence of the disease 0.5% of the time when the disease is not present. One percent of the population actually has the disease. Calculate the probability that a person has the disease, given that the test indicates the presence of the disease.The probability that a friend is at least 13 minutes late is