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David took a test whose mean was 60% and standard deviation was 3%, and the results were distributed normally. The total points possible was 50. David's results were reported to be at the 95th percentile. What was minimal score possible for David, rounded to the nearest whole number?
Carrying intermediate computations at least 3 decimal places what is the the lower and upper limits of the 90% confidence interval?
10 equally qualified applicants; six men and four women apply for three lab technician positions. Unable to justify choosing any of the applicants over all the others, the personnel director decides to select the three at random. Let X denote the ..
a company that makes shampoo wants to test whether the average amount of shampoo per bottle is 16 ounces. the standard
Distinguish between decision making under certainty and decision making under uncertainty. Mention certain methods for solving decision problems under uncertainty. Discuss how these methods can be applied to solve decision problems.
in a large population 95 of the households have cable tv. a simple random sample of 64 households is to be contacted
In the Sci Tools example, use a two-way data table to see how (or whether) the optimal decision changes as the bid cost and the company's production cost.
Determine the 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2.
The relationship between current assets and current liabilities is important in evaluating a company's
A security system has been set up so that if three incorrect passwords are tried before the correct one, the computer file is locked and access to it denied. If n = 7, what is the probability that the secretary will gain access to the file?
Find the mean and standard deviation of the sum X + Y.- Find the mean and standard deviation of the difference X - Y.
assume that a procedure yields a binomial distribution with a trial repeated ntimes. use a binomial probabilities table
U.S Census data show that 14% of the consumer population is 18 to 24 years old. Given the consumer is 18 to 24 years old, what is the probability that the consumer use a plastic card?
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