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Vladimir79 [104]
2 years ago
5

Help thank you but quick due date is soon

Mathematics
1 answer:
hammer [34]2 years ago
5 0

Answer:

If you reflect point x across the y axis, it will end up at (-1/2,0).

Step-by-step explanation:

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The value of z score for the history class test of Opal’s test score is negative one (-1).

<h3>What is normally distributed data?</h3>

Normally distributed data is the distribution of probability which is symmetric about the mean.

The mean of the data is the average value of the given data. The standard deviation of the data is the half of the difference of the highest value and mean of the data set.

The z score for the normal distributed data can be given as,

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The standard deviation value of the scores of history class is,

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z=\dfrac{72-79}{7}\\z=-1

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