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liraira [26]
3 years ago
8

What is the standard deviation of the following data? If necessary, round your answer to two decimal places.

Mathematics
1 answer:
katrin2010 [14]3 years ago
7 0
 we are given with the set of data containing the elements listed above and is asked to find out the standard deviation of the data. SD is used to determine the distance between the points to the best fit line gained from the data. The formula to be followed is the square root of the summation of (x-mean) over n-1. sd is equal to <span>5.13.</span>
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Lynn has a box of crayons.
Scrat [10]

Answer:

<em>There are 72 crayons in the box</em>

Step-by-step explanation:

<u>Fractions</u>

To solve this problem we'll manage numbers as fractions to keep the precision up to the end of it.

Lynn has a box of crayons. It's given 4/9 of the crayons are blue. The remaining crayons are:

1-\frac{4}{9}=\frac{5}{9}

From that portion, 65% are red, or equivalently, 35% are yellow.

We write 35% as a fraction:

\displaystyle 35\%=\frac{35}{100}=\frac{7}{20}

Thus, the portion of yellow crayons is:

\displaystyle \frac{7}{20}\cdot \frac{5}{9}=\frac{7}{36}

This fraction of x crayons is equal to 14, thus:

\displaystyle x=\frac{14}{\frac{7}{36}}=14\cdot\frac{36}{7}

x = 72

There are 72 crayons in the box

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3 years ago
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AnnyKZ [126]
The answer would be b
3 0
3 years ago
Suppose 15% of x equals 20% of y. What percentage of x is y ?
WINSTONCH [101]

Answer:

x = 133\frac{1}{3} of y

Step-by-step explanation:

Given:

15% of x equals 20% of y

So,

0.15x = 0.20y

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x = 0.20 y / 0.15

x = 1.3333y

x = 133\frac{1}{3} of y

7 0
2 years ago
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Find the value of angle "A" and angle "B"​
saul85 [17]

Answer:

31 degrees

Step-by-step explanation:

Not sure where angle B is, but

90-59= 31

3 0
3 years ago
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A college admits a freshman class of 330 students at the beginning of each academic year and graduates 145 students twice a year
Andre45 [30]

Answer:

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Step-by-step explanation:

<u>Change in one year:</u>

  • 330 - 2(145) = 330 - 290 = 40

<u>Change after 5 years:</u>

  • 40*5 = 200 students

5 0
3 years ago
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