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Dogs are being trained to detect lung cancer by smelling the breath of patients. 1286 patientswith known cancer status are tested. 708 patients without cancer were given a negative result,and 4 patients without cancer were given a positive result. 10 patients with cancer were givena negative result, and 564 patients with cancer were given a positive result.
(a) Create a table to organize the above information and help solve the problems below.
(b) Find the probability of a positive test for a patient with cancer (the sensitivity).
(c) Find the probability of a negative test for a patient without cancer (the specificity).
(d) Find the probability of having cancer for a patient getting a positive result (the positivepredictive value) for this test on this sample.
(e) Assume that the sensitivity and specificity are always the same. Find the positive predictivevalue of this test when used on a population where 7% of people have lung cancer.
Using variables below, (1) mention all research questions that would be replied with a Two Way ANOVA test, (2) make null hypotheses for these questions.
Find the point estimate for the population proportion, the margin of error for a 95% confidence and then construct to the 95% confidence interval for the population proportion
X2 is college board score (range 200-800). Use the multiple regression equation to predict college gpa for a high school gpa of 3.6 and a college board score of 600.
the null hypothesis of an f-test comparing three group means is that all three group means are equal. what is the
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in six test runs a truck operated 8 10 15 7 9 and 11miles with one gallon of gasoline. at the 95 level of confidence is
What is the critical value - what is the test statistic and What are the null and alternative hypotheses?
Is research and development competition between two firms for a patent for a cure for lung cancer likely to satisfy the two components of the rent-seeking hypothesis? Why or why not?
you and your friend join a new gym that requires a one-time joining fee and monthly payments. 10 ptsa. if your friend
You only worry if there is at least a 50 or more percent chance that you have the disease. Suppose that test has same specificity = p For what value of p will you start to worry?
Set up a proportion and solve it to demonstrate this type of business application. (An example might be 5 hours / $20 = 10 hours / x). Remember that setting the cross products (multiplications) equal, and then solving for x is the way to solve a p..
Suppose that plants of a particular species are randomly dispersed over an area so that the number of plants in a given area follows a Poisson distribution with a mean density of λ plants per unit area. If a plant is randomly selected in this area..
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