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Mathematics, 21.06.2019 18:40
2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?
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Mathematics, 21.06.2019 23:30
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Mathematics, 22.06.2019 00:50
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Mathematics, 22.06.2019 01:00
Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.
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