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A new test for strep throat is developed. 500 children with sore throat are tested with the new test and also have throat cultures taken. Assume that the throat cultures are 100% accurate in determining whether or not a child has a strep infection.
The following data are collected:
The new test showed positive results (strep throat) in 210 children out of the 276 children who had positive strep cultures
The new test showed negative results (no strep throat) in 190 children out of 224 children who had negative strep cultures.
If the prevalence (pre-test probability) of strep throat among children in the population is 2%, what is the probability that a child has strep throat if the new test result for that child is positive? (Hint: This is a problem using Bayes' Theorem).
A chemistry professor at ASU has 36 questions that she uses on her exams. Her exams always have 11 questions. How many distinct exams can she give? The order of the questions does not matter
Determine the probability that the technician will have enough processors to replace 3 defective processors at the repair sites.
what is the formula of t-quantile distribution needed to calculate an exact 90 confidence interval for the
a) What is the probability of observing 3 or fewer defects if a major adjustment is needed?
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Positive values correspond to students who gained weight and negative numbers correspond to students who lost weight. Is a weight fain of 15 pounds of (6.8) kilograms unusual?
The market supply curve is given as P = 100 + 2Q. Several new firms enter this market and now you are told that at each price there are now 50 more units of the good available. What is the equation for the new market supply curve?
Develop a point estimate of the number of minutes per day officeworkers waste trying to locate mislabeled, misfiled, or misplaced items.
A safety engineer claims that only 40% of all workers wear safety helmets when they eat lunch at the workplace. Assuming that his claim is right, find the probability that at most 4 out of 6 workers randomly chosen will be wearing their helmets wh..
The average amount of time that visitors spent looking at a retail company's old home page on the world wide web was 23.6 seconds.
A certain medical organization tends to oppose the use of meat and dairy products in our? diets, and that organization has received hundreds of thousands
In a study of the differentiation process, 26 juvenile animals were reared in smooth plastic trays, 18 were reared in trays containing several oyster chips, and 23 were reared in trays with only one oyster chip.
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