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Suppose that in a large hospital system, that the average (mean) time that it takes for a nurse to take the temperature and blood pressure of a patient is 150 seconds with a standard deviation of 35 seconds. What is the probability that 30 nurses selected at random will have a mean time of 155 seconds or less to take the temperature and blood pressure of a patient?
Assume for this part that the test results are conditionally independent given Fred's disease status. Let a = P(Tj|D) and b = P(Tj|Dc).
let x and y be independent exponential random variables with means 2 and 3 respectively. let zxy. determine
Write the form of the joint PDF, fx,y(x,y). - Find the marginal PDFs fx(x) and fy(y). - Find Pr(X>1/2) and Pr(Y
Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. Test the claim that p is less than 0.301 by using What is the value of the test statistic?
jane and janet are both taking math 301. they are good students and work independently. jane has a 45 chance of earing
If a filled container of juice is selected at random, what is the probability that it is a nonconforming container? If a filled container of juice is selected at random, what is the probability that it was filled on machine II?
Twenty three percent of automobiles are not covered by insurance. On a particular weekend, 35 automobiles are involved in accident.
According to an article in USA Today, 90% of Americans will suffer from high blood pressure as they age. Out of 20 randomly chosen people what is the probability that at most 3 will suffer from high blood pressure?
a math test has a mean of 49 and standard deviation of 10.0. find the corresponding z scores fori. a test score of
in a game of chance a number of draws are made with replacement from a box of tickets 500 of these tickets are labeled
Use descriptive statistics to explain how parental involvement and interests in child's education can impact on educational attainment measured in terms of their numeracy (v24_7), literacy (v28_7) and creativity skills (v25_7 and v26_7)
Use a 1% level of significance to test the claim that the distribution of first nonzero digits in the account file does not follow Benford's Law.
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