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A retailer purchases a batch of 1000 fluorescent lightbulbs from a wholesaler at a cost of $2 per bulb. The wholesaler agrees to replace each defective bulb with one that is guaranteed to function properly for a charge of $0.20 per bulb. The retailer sells the bulbs at a price of $2.50 per bulb and gives his customers free replacements if they bring defective bulbs back to the store. Let X be the number of defective bulbs in a typical batch, and assume that the mean and standard deviation of X are 50 and 10, respectively.
a. Find the mean and standard deviation of the profit (in dollars) the retailer makes from selling a batch of lightbulbs.
b. Find an interval with the property that the retailer can be approximately 95% sure that his profit will be in this interval.
Use the gemerators and relations for D(sub2n)= to show that if x is any element of D2n, that is not a power of r, then rx=xr^-1.
What is the largest possible total area of the three pens? Note: The answer to this problem requires that you enter the correct.
finding thenbsp probability from the given dataa package contains 9 candy canes 6 of which are cracked. if 2 are
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A swimming pool is 12 meters long, 6 meters wide, 1 meter deep at the shallow end, and 3 meters deep at the deep end. Water is being pumped into the pool at 1/4 cubic meter per minute, and there is 1 meter of water at the deep end.
Probability : Selection Without Replacement and Stirling's Formula, A box contains 3n red balls and 3n white balls. 2n balls are selected at random without replacement, express the probability p
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