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the salary of police officers is normally distributed with a mean of $62000 per year and a standard deviation of $5000 per year. what percentof police officers make: what salary represents the top 5%?
Statistics and Probability, Statistics
In a pre-election poll, a candidate for district attorney receives 304 of 600 votes. Assuming that the people polled represent a random sample of the voting population, test the claim that a majority of voters support th ...
Which of the following techniques could we use to evaluate the effect of sales at one coffee shop versus sales at another coffee shop, so see if the two shops might be cannibalizing business from one another?
Suppose that you sample 59 high school baseball pitchers in one county and find that they have a mean fastball pitching speed of 80.00 miles per hour (mph) with a standard deviation of 4.98 mph. Find a 95% confidence int ...
Consider a binomial probability distribution with p=0.3. Complete parts a through c below. a. Determine the probability of exactly four successes when n=5 P(4)=
Question: I don't understand how you would test if the data shows that there is a difference between some supplies if the testing level is at 1%? Can you show me the steps of how you would test if the data shows that the ...
Boxes of sugar are filled by machine with considerable accuracy. The distribution of box weights is normal and has a mean of 32 ounces with a standard deviation of only 2 ounces. A quality control inspector takes a sampl ...
A pawnshop will lend $4,750 for 45 days at a cost of $35 interest. What is the effective rate of interest? (Use a 360-day year. Do not round intermediate calculations. Input your answer as a percent rounded to 2 decimal ...
100 people are invited to the party. Each guest is estimated to eat 0 or 1 or 2 sandwiches with probabilities 0.2,0.50.3 respectively. How many sandwiches should be ordered ro be approx 90% confident that there will be e ...
1)The R-squared of a linear regression model is equal to the proportion of the variance of the target explained by a linear regression model. 2). The R-squared of a linear regression model is equal to the proportion of t ...
The number of facets in the eye of the fruit fly Drosophila melanogaster is of interest in genetics to model changes across many generations (ie genetic selection). The distribution of the number of facets in the eye in ...
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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