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castortr0y [4]
3 years ago
13

NEED HELP ASAP

Mathematics
1 answer:
Aliun [14]3 years ago
3 0
Well, first you want to figure out how many sentences Jolie has left to read. You can do that by multiplying 120 by 17 which equals 2,040. Then you have to divide 2,040 by 14. The answer to that is about 145.72 which you could just leave at about 145 minutes. And to simplify that even more you could divide by 60 and figure that 145.72 is about 2 hours and 42 minutes.
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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
A box has four coins coin 1 has both sides tails coin 2 has both sides heads coin 3 has both sides heads coin 4 if a regular coi
zysi [14]
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6 0
3 years ago
Write the equation of the circle graphed below.
mojhsa [17]

Answer:

As shown in picture, this circle has radius 1.5 and passes (0, 1.5)

=> According to the general form of equation of circle that has radius r and passes (a, b): (x - a)^2 + (y - b)^2 = r^2, we have:

x^2 + (y - 1.5)^2 = 1.5^2

<=>

x^2 + (y - 1.5)^2 = 2.25

Hope this helps!

:)

6 0
3 years ago
A car traveled 200 miles on 8 gallons of gas. Find the unit rate of gallons per mile.
Rufina [12.5K]
0.04 gallons per mile

Hope I helped please press "thanks" button, It will make me happier
6 0
3 years ago
Read 2 more answers
What is the value of f(−3) for each function?1.
Hatshy [7]

Answer:

1. -21

2 . 14

3. -5

sorry if I'm wrong

Step-by-step explanation:

1. f(x) = 4 (-3) -9

f(x) = -12 - 9

f(x) = -21

2. f(x) = 1/3(-3) +13

f(x) = 1 + 13

3. f(x) = -2 (-3) -11

f(x) = 6 - 11

8 0
3 years ago
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