Confidence level and sample data
Use the confidence level and sample data to find the margin of error E. Systolic blood pressures for women aged 18-24: 94% confidence; n = 100, = 115.1 mm Hg, sigma s = 12.6 mm Hg.
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A local drugstore knows that on the average 60 people stop by his store per hour. What is the probability that in a given 3-minute period nobody enters the store?
Employ the given level of confidence and sample data to develop a confidence interval for the population proportion p. Of 346 items tested, 12 are found to be defective. Construct the 98% confidence interval for the proportion of all such items th
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Every day adding $1000 to amount on previous day, that offer must they take? How much would they make under every arrangement? You should verify the conclusions mathematically.
Assume that X^2 has a chi^2 distribution with 6 degrees of freedom. Find out P(X^2 > 4.3) and determine the value of A such that P(X^2 > A) = 0.11.
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Let X follow a unifor distribution U(0,2) and let conditional distribution of Y given X = x be U(0,x2). Determine the conditional expectation of Y given X = x?
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