Mathematics, 09.04.2021 04:40, PrincesssOfficial
A design engineer wants to construct a sample mean chart for controlling the service life of a halogen headlamp his company produces. He knows from numerous previous samples that this service life is normally distributed with a mean of 500 hours and a standard deviation of 20 hours. On three recent production batches, he tested service life on random samples of four headlamps, with these results SampleService Life (hours) 1495500505500 2525515505515 3470480460470 If he uses upper and lower control limits of 520 and 480 hours, on what sample(s) (if any) does service life appear to be out of control
Answers: 2
Mathematics, 21.06.2019 14:00, ladnerhailey16
F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.
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Mathematics, 21.06.2019 18:30, tyler5016
The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125
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Mathematics, 21.06.2019 19:30, isabelgarcia188
∆red ≅ ∆ by rule will give brainiest if possible
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