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alvarezmrs1913
30.07.2019 •
Mathematics
One is dollar is currently worth 84.1 japanese yen. if you exchange 4,205 for us dollars, how much will you have?
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Ответ:
Ответ:
Someone else asked the same question-This answer is a most trusted answer submitted by LammettHash
The quick way would be to use the 68-95-99.7 rule. Notice that 825 = 750 + 75, so that 825 is one standard deviation away from the mean. The rule says that approximately 68% of a normal distribution lies within one standard deviation of the mean (in the interval [750 - 75, 750 + 75] = [675, 825]), so about 34% would lie within one standard deviation to the right of the mean.
The longer but more accurate way would be to compute the probability:
where is a random variable following the standard normal distribution with mean 0 and standard deviation 1. We find as expected.
Hope this helped