Grade should be the cutoff
Professor Truman would like to assign grades such that 10% of students receive As. If the exam average is 62 with standard deviation of 13, what grade should be the cutoff for an A?
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For Plutonium 239, rate of the disintegration is proportional to the amount remaining. If after 15 years, it's determined that .04% of the initial amount has disintegrated, how much will remain after 300 years?
If you've a credit card with no annual fee and 18% annual rate (simple interest), and you've a balance of $3000, how much would you save over the course of year if you switched to another card that charged the $25 annual fee, and 4% transaction fe
For Plutonium 239, the rate of the disintegration is proportional to the amount remaining. If after 15 years, it's determined that .04% of the initial amount has disintegrated, how much will remain after 300 years?
Two full 100 gal. mixing barrels are connected in following way. Container A has 3 gallons of brine coming in for each minute which contains 2 lbs. of salt per gal.. the solution in tank A is forced in tank B which feeds 1 gal.
Carter's Bed & Breakfast breaks even every month if they book 30 rooms over course of month. Their fixed cost is $1050 for each month and the revenue they receive from each booked room is $150. Determine the variable cost per occupied room?
An amortized loan is repaid with the annual payments which start at 400 at the end of first year and raise by 45 each year till a payment of 1480 is made after which they cease. If interest is 4% effective, determine the amount of principal in the
Let X be the nonempty set and let A be a subset of X. We illustrate the characteristic function x_A ?X?{0, 1} of the set A by x_A (x)= {(1 if x?A 0 if x?A)
The length of a rectangular field is 7/5 its width. If the perimeter of the field is 240 meters, what are the length and width of the field?
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