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You are the administrator for a drug screening program. The drug screening test correctly detect the presence of drugs 99.8% of the time. The test will falsely detect the presence of drugs 1.5% of the time. Assuming that a random person has a 0.5% chance they use drugs, answer the following:
Note: P(test positive | drugs present) = .998
P(test positive | drugs not present) = .015
P(drugs present) = .005
a. What is the probability a test comes back positive for drugs?
If you were Ralph, how would you plan the sales call?
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Use the normal distribution to find a confidence interval for a proportion P given the relevant sample results. Give the best point estimate for P
suppose the data represent the inches of rainfall in april for a certain city over the course of 20 years.a determine
At the .05 significance level, is there a difference in the proportion of viewers watching the three channels?
Suppose we have observations x1, x2, . . . , xn. Prove that the sum of deviations of the observations from their arithmetic mean is always equal to zero.
Each domino piece is marked by two numbers. The pieces are symmetrical so that the number-pair is not ordered. How many different pieces can be made.
When he tests these patients a second time, the average cholesterol readings tended to have gone down somewhat.
Which of these variables are discrete and which are continuous random variables?
Find a number m such that if five dice are rolled, the probability that the total number of spots showing is m or more is the same as this probability.
Suppose that the time students wait for a bus can be described by a uniform random variable X, where X is between 0 minutes and 60 minutes.
Jan is a 35-year-old individual who plans to retire at age 65. Between now and then $4000 is paid annually into her IRA account
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