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Question: Suppose a rare disease occurs in about 1 out of 1000 people who are like you. A test for the disease has sensitivity of 95% and specificity of 90%. Using the technique described in this chapter, compute the probability that you actually have the disease, given that your test results are positive.
Find the standard deviation of this sample of monthly salaries. Round your answer to at least two decimal places.
At a casino, people play the slot machines in hopes of hitting the jackpot, but most of the time, they lose their money. A certain machine pays out an average of $0.92 (for every dollar played), with a standard deviation of $120.
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a standard deviation of 8.
For a wide sense stationary sequence Xn with zero expected value, extend lmsepredictor.m to a function h = kpredictor(rx,M,k) Which produces the filter vector h of the optimal k step linear predictor of X+ given the observation
In multi-choice test, each question has four options. Students wil get 10 points for each correct answer; lose four points for each incorrect answer; and receive no points for unanswered questions.
Acme Taxi has two taxi cabs. The manager tracks the daily revenue for each cab. Over the past 20 days, Cab A has averaged $76.00 per night with a standard deviation equal to $11.00.
Which of the following can be treated as binomial experiment? (a) Surveying 1200 registered voters to determine their preferences for the next president?
In the Cash Now lottery game there are 10 finalists who submitted entry tickets on time. From these 10 tickets three grand prize winners will be drawn.
two airplanes are flying in the same direction in adjacent parallel corridors. at time t 0 the first airplane is 10 km
The IQs of army volunteers in a given year are normally distributed with µ ¼ 110 and a ¼ 10. The army wants to give advanced training to the 25% of those recruits with the highest IQ scores. What is the lowest IQ score acceptable for the advanced ..
State the hypotheses for a right-tailed test. Obtain a test statistic and p-value assuming equal variances. Interpret these results. Is the difference in mean scores large enough to be important?
Describe the purpose of the study - What is the research question in the study and what is the hypothesis of the study?
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