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A 99% confidence interval for the proportion of knee replacement surgeries that result in complications. It was suggested that approximately 8% of such operations result in complications. What sample size is needed so that the confidence interval will have a margin of error of 0.074?
A data set of ordered pairs with a negative linear correlation has a coefficient of determination of 85.2%. What is the linear correlation coefficient?
Removing oil from a water/oil mix. In the oil industry, water that mixes with crude oil during production and transportation must be removed.
a random sample of n 400 measurements is drawn from a binomial population with probability of success .21. give the
Assume that the significance level is a=0.05. Use the given statement and find the? P-value and critical? value(s).
A 95% confidence interval for a population proportion yielded the interval (.678, .764). Show your work. 1. Compute the margin of error.
4. Although most of us buy milk by the quart or half gallon, farmers measure daily production in pounds. Ayreshire cows average 47 pounds of milk a day with a standard deviation of 6 pounds. For Jersey cows, the mean daily production is 43 pounds wit..
Suppose that 45 percent of the population favors a certain candidate in an upcoming election. If a random sample of size 200 is chosen, find the expected value and standard deviation of the number of members of the sample that favor the candidate..
Use the cumulative probability function computed in (b) to find the probability that anywhere from one to four shipment orders will arrive on a given day.
Of 970 subjects, 20 answered yes and 950 answered no. find p^, the proportion of the sample who were victims. Find the standard error of this estimate.
A survey of 608 adults showed that 401 of them approved of the way city government was being run. Find a 99% confidence interval for the true proportion of voters who approve the way city government is being run.
1. What is a business plan, for whom is it prepared, and why? 2. What should a complete business plan include?
Kids again. Find the standard deviation of the number of children the couple in Exercise may have.
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