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alvarezjc20
16.04.2020 •
Mathematics
Look at this set of ordered pairs:
(6, 4)
(9, 20)
(15, 15)
(12, 3)
Is this relation a function?
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Ответ:
yes it is
Step-by-step explanation:
none of the x values are repeating in the pairs so it is considered a function. :)
Ответ:
0.8413 = 84.13% probability that a bolt has a length greater than 2.96 cm.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean
and standard deviation
, the z-score of a measure X is given by:
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.
Mean of 3 cm and a standard deviation of 0.04 cm.
This means that![\mu = 3, \sigma = 0.04](/tpl/images/1367/3757/843fa.png)
What is the probability that a bolt has a length greater than 2.96 cm?
This is 1 subtracted by the p-value of Z when X = 2.96. So
1 - 0.1587 = 0.8413
0.8413 = 84.13% probability that a bolt has a length greater than 2.96 cm.