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?
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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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