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AnnyKZ [126]
3 years ago
14

Help me to do this question plz I will make you as brainlist ​

Mathematics
1 answer:
romanna [79]3 years ago
6 0

Answer:

I don't understand the language but I can do it

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Step-by-step explanation:

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For the 405 highway that car pass through a checkpoint, assume the speeds are normally distributed such that μ= 61 miles per hou
Strike441 [17]

Answer:

Z = 1

Step-by-step explanation:

Z - score

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

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 pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 61, \sigma = 4

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This is Z when X = 65. So

Z = \frac{X - \mu}{\sigma}

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Z = 1

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4 years ago
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