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Zepler [3.9K]
3 years ago
6

HURRY PLEASE!! I’ll mark you as brainiest!! 38 points

Mathematics
1 answer:
AlekseyPX3 years ago
5 0

Answer:

When they get their hair cut it will be 69 inches long. It would take 23 months for both.

Step-by-step explanation:

1x3=3

3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69

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QUESTION 3 of 10: Stock returns vary from year to year. The more variance a stock displays the greater the potential risk. These
Dahasolnce [82]

Answer:

The variance of these investment returns is 74

Step-by-step explanation:

Given:

Series =  10, 30, 15, 5, 20

To Find:

variance of a series = ?

Solution:

The variance of the series = Var\left(X\right)=\sum _{i=1}^n\frac{\left(x_i-\bar{x}\right)^2}{n}

\bar{x} = \frac{10+30 +5+15 + 20}{5}

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\bar{x} =16

Now (x_i -\bar{x})^2 = (10 -16)^2 + (30 -16)^2 + (5 -16)^2 +(15 -16)^2 +(20 -16)^2

= (-6)^2 + (14)^2 + (-11)^2 + (-1)^2+ (-4)^2

= 36  + 196 +121 +  1+ 16

=  370

Now

Var\left(X\right)=\frac{370}{5} =  74

6 0
3 years ago
Read 2 more answers
Can someone please check my answer?!
Vlad1618 [11]

Answer:

You answered it correctly :)

Step-by-step explanation:

5 0
3 years ago
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