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PIT_PIT [208]
2 years ago
6

Help please this is do soon I will mark brainliest

Mathematics
1 answer:
Fed [463]2 years ago
4 0

Answer:

(-3,2)

Step-by-step explanation:

when reflecting over the y axis all you have to do is flip the signs on the x values so it would be (-3,2)

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A new phone system was installed last year to help reduce the expense of personal calls that were being made by employees. Befor
Leya [2.2K]

Using the normal distribution, it is found that there was a 0.9579 = 95.79% probability of a month having a PCE between $575 and $790.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

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

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 700, \sigma = 50.

The probability of a month having a PCE between $575 and $790 is the <u>p-value of Z when X = 790 subtracted by the p-value of Z when X = 575</u>, hence:

X = 790:

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

Z = \frac{790 - 700}{50}

Z = 1.8

Z = 1.8 has a p-value of 0.9641.

X = 575:

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

Z = \frac{575 - 700}{50}

Z = -2.5

Z = -2.5 has a p-value of 0.0062.

0.9641 - 0.0062 = 0.9579.

0.9579 = 95.79% probability of a month having a PCE between $575 and $790.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

3 0
1 year ago
Greg has decreased his running time by 1 tenth minute each of the last six weeks. Write an expression to represent the total cha
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R = -1/10x. Don't forget to rate and give me the brainliest answer! Then, I can help you with all your problems! ^-^ ~

6 0
3 years ago
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A square is having perimeter 96 cm. Find its area.
nekit [7.7K]

Answer:

348

Step-by-step explanation:

96 multiplied by 4

gives the answer that is 348

4 0
2 years ago
Is 5/6 greater less than or equal 2/3
olga55 [171]
5/6 is greater than 2/3

Multiply both numerator & denominator by 2 in order to have common denominators, 2/3 * 2/2 = 4/6
Now, you can see, 5 is greater than 4, in the numerator so 5/6 would be greater 

Hope this helps!
5 0
3 years ago
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