A certain disease has an incidence rate of 0.7%. If the false negative rate is 7%...
A certain disease has an incidence rate of 0.7%. If the false negative rate is 7% and the false positive rate is 5%, compute the probability that a person who tests positive actually has the disease.
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A certain disease has an incidence rate of 0.7%. If the false
negative rate is 7%...
A certain disease has an incidence rate of 0.5%. If the false negative rate is 5%...
A certain disease has an incidence rate of 0.5%. If the false negative rate is 5% and the false positive rate is 4%, compute the probability that a person who tests positive actually has the disease. Give your answer accurate to at least 3 decimal places
A screening test for a rare form of TB has a 7% false positive rate (i.e. indicates the presence of the disease in people who do not have it). The test has an 8% false negative rate (i.e. indicates th...
A screening test for a rare form of TB has a 7% false positive rate (i.e. indicates the presence of the disease in people who do not have it). The test has an 8% false negative rate (i.e. indicates the absence of the disease in people who do have it). In a population of which 0.6% have the disease, what is the probability that someone who tests positive has the disease?
Giving a test to a group of students, the grades and gender are summarized below A...
Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 10 14 18 42 Female 19 11 15 45 Total 29 25 33 87 If one student is chosen at random, Find the probability that the student was female AND got a "A". Question 8 . 1 pts A certain disease has an incidence rate of 0.8%. If the false negative rate is 8% and the false positive rate is...
The proportion of people in a given community who have a certain disease is 0.005. A...
The proportion of people in a given community who have a certain disease is 0.005. A test is available to diagnose the disease. If a person has the disease, the probability that the test will produce a positive signal is 0.99. If a person does not have the disease, the probability that the test will produce a positive signal is 0.01 a. If a person tests positive, what is the probability that the person has the disease? b. If a...
1. Suppose you roll a special 19-sided die. What is the probability that the number rolled...
1. Suppose you roll a special 19-sided die. What is the probability that the number rolled is a "1" OR a "2"? Round to 3 decimal places. 2. A test was given to a group of students. The grades and gender are summarized below A B C Total Male 7 10 2 19 Female 8 5 15 28 Total 15 15 17 47 If one student is chosen at random from those who took the test, Find the probability that...
The proportion of people in a given community who have a certain disease is 0.005. A...
The proportion of people in a given community who have a certain disease is 0.005. A test is available to diagnose the disease. If a person has the disease, the probability that the test will produce a positive signal is 0.96. If a person does not have the disease, the probability that the test will produce a positive signal is 0.04. 1. If a man tests negative, what is the probability that he actually has the disease? 2. For many...
A disease affects 16% of the population. There is a test (not perfect) that detects disease...
A disease affects 16% of the population. There is a test (not perfect) that detects disease with a probability of 98% (i.e comes back positive when the person has the disease). However, the test produces 5% false positives, i.e comes back positive even though the person does not have the disease. i) A person who has the disease is tested, what is the probability that the test will come back negative. ii) What is the probability that a randomly selected...
A medical test has been designed to detect the presence of a certain disease. Among people...
A medical test has been designed to detect the presence of a certain disease. Among people who have the disease, the probability that the disease will be detected by the test is 0.94. However, the probability that the test will erroneously indicate the presence of the disease in those who do not actually have it is 0.05. It is estimated that 6% of the population who take this test have the disease. (Round your answers to three decimal places.) (a)...
A screening test for a rare from of TB has a 7% false positive rate (i.e....
A screening test for a rare from of TB has a 7% false positive rate (i.e. indicates the presence of the disease in people who do not have it). The test has an 18% false negative rate (i.e. indicates the absence of the disease in people who do have it). Suppose that 3% of the population have the disease. (i) Partition the sample space into those who have the disease, B1, and those who don’t have the disease, B2. Find...
In a laboratory, blood test is 95% effective in detecting a certain disease, when it is,...
In a laboratory, blood test is 95% effective in detecting a certain disease, when it is, in fact, present. However, the test also yields a false positive (test is positive but patient does not have the disease) result for 1% of the healthy people tested. 0.5% of the population actually has the disease. Given this information, calculate the following probabilities: The probability that the test is positive. Given a negative result, the probability that the person does not have the...
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