Mathematics, 13.07.2021 16:30 tsmittens137
The life of light bulbs is distributed normally. The standard deviation of the lifetime is 20 hours and the mean lifetime of a bulb is 510 hours. Find the probability of a bulb lasting for at most 528 hours
Answers: 3
Mathematics, 21.06.2019 21:30, baltazmapa629n
The length of a field is 100 yards and its width is 75 yards. if 1 inch represents 25 yards, what would be the dimensions of the field drawn on a sheet of paper?
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Mathematics, 22.06.2019 01:30, tingzontumbler8412
Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.
Answers: 2
The life of light bulbs is distributed normally. The standard deviation of the lifetime is 20 hours...
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