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bonufazy [111]
3 years ago
9

Simplify this questions6---+15.45

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
5 0
6/5 +15.4
12/10 +15.4
12/10+154/10
166/10
16.6

This can also be done by using the following method:
6/5 +15.4
12/10+15.4
1.2+15.4
16.6

Hope this helps :)
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Step-by-step explanation:

According to the Question,

Given That, The diameters of ball bearings are distributed normally. The mean diameter is 87 millimeters and the standard deviation is 6 millimeters. Find the probability that the diameter of a selected bearing is greater than 84 millimeters.

  • In a set with mean and standard deviation, the Z score of a measure X is given by Z = (X-μ)/σ

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This is 1 subtracted by the p-value of Z when X = 84.

So, Z = (84-87)/6

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Note- (The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X)

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