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In a sample batch of 46 mechanical pencils it is assumed that 18 are defective. If 5 mechanical pencils are randomly selected, what is the probability that none of them are defective?
Statistics and Probability, Statistics
If you know the percentile rank is 50. The mean is 50 and the standard deviation is 5. What is the raw score, z score, and t score?
A cell phone company offers 15 different voice packages and 15 different data packages. Of those, 6 packages include both voice and data. How many ways are there to choose either voice or data, but not both?
One? study, based on responses from 1,016 randomly selected? teenagers, concluded that 44?% of teenagers cite grades as their greatest source of pressure. Use a 0.05 significance level to test the claim that fewer than h ...
You are the foreman of the Bar-S cattle ranch in Colorado. A neighboring ranch has calves for sale, and you are going to buy some calves to add to the Bar-S herd. How much should a healthy calf weigh? Let x be the age ...
Among 140 subjects with positive test? results, there are 25 false positive? results; among 152 negative? results, there are 22 false negative results. If one of the test subjects is randomly? selected, find the probabil ...
A project has an initial outlay of $2,034. It has a single cash flow at the end of year 6 of $4,743. What is the internal rate of return (IRR) for the project? Round the answer to two decimal places in percentage form.
In general, a binomial distribution can be approximated well using a normal distribution only if
Tossing a fair coin three times, what's the probability that at least one head will occur?
Thirty-eight percent of consumers prefer to purchase electronics online. You randomly select 16 consumers. Find the probability that the number who prefer to purchase electronics online is at most 5.
The average starting salary for graduates at a university is $33,000 with a standard deviation of $2,000. If a histogram of the data shows that it takes on a mound shape, the empirical rule says that approximately 68% of ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p
Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As
Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int
Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As