Mathematics, 19.07.2019 16:30 tybtookie
Acertain brand of flood lamps has a lifetime that is normally distributed with a mean of 3,750 hours and a standard deviation of 300 hours. sketch a. what is the probability that a lamp will last for more than 4,000 hours? b. what is the probability that a lamp will last less than 3,000 hours? c. what lifetime should the manufacturer advertise for these lamps in order that only 4% of the lamps will burn out before the advertised lifetime?
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Asystem of equation is shown below 6x - 2y equals 3 . and 5x + 3y equals 4. would you solve by substitution or elimination? and why
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Mathematics, 21.06.2019 16:00
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Mario is constructing a frame for 10 in. by 8 in. photo. he wants the frame to be the same with all the way around in the same area of the frame and photo to be 120 square inches what is the dimension of the frame?
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Acertain brand of flood lamps has a lifetime that is normally distributed with a mean of 3,750 hours...
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