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A file cabinet manufactor estimates that 5% of it's file cabinets will have drawers that close improperly. Assume a production of 120 cabinets is completed. What is the mean and the standard deviation of this distribution?
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?
Please show all work. A pair of dice is tossed and the face number of each die is recorded. Assuming the dice are fair, what's the probability of the sum of the die faces showing is even?
Express Courier Service has found that the delivery time for packages is normally distributed with mean 14 hours and standard deviation 2 hours. a. What percent of the packages will be delivered in less than 18 hours? b. ...
There are twenty stores for a grocery chain in the Mid-Atlantic region. The regional executive wants to visit five of the twenty stores. She asks her assistant to choose five stores and arrange the visit schedule. (Pleas ...
A CPU manufacturing company knows, based on the machines working at maximum productivity, that 90% of the CPU's coming off the line meet quality standards. The quality control inspector pulls 25 CPU's off the line to tes ...
Suppose you believe that Johnson Company's stock price is going to increase from its current level of $22.50 sometime during the next 6 months. For $250.30 you can buy a 6-month call option giving you the right to buy 10 ...
Consider the following random sample of data: 8, 6, -6, 0, -9, 4, -1, 7, 6, 84 a) What is the standard deviation of the sample data? Round your response to at least 3 decimal places. b) If the outlier is removed, what is ...
A researcher records the following number of birdcalls made during an experimental session with robins: 8.4 0.9 (M SD). Assuming these data are normally distributed, what is the probability that robins made more than 11 ...
The commissioner of the state police is reported as saying that about 10% of reported auto thefts involve owners whose cars haven't really been stolen. What null and alternative hypotheses would be appropriate in evaluat ...
Suppose that college science textbooks on average cost 225 dollars with a standard deviation of 45 dollars. Suppose that a random sample of 40 college science textbooks was taken. Find the probability that the sample mea ...
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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