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3 years ago

What is the equation that represents the line?

Mathematics

1 answer:

-Dominant- [34]3 years ago

4 0

Answer: -7-4

Step-by-step explanation:

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Calculate the sample variance and sample standard deviation for the following frequency distribution of heights in centimeters f

Zolol [24]

Answer:

$\bar X = \frac{\sum_{i=1}^n X_i f_i}{n}= \frac{22026.1}{171}=128.81$

$s^2 = \frac{2839948.85- \frac{(22026.1)^2}{171}}{171-1}= 16.59$

$s= \sqrt{16.587}=4.07$

Step-by-step explanation:

For this case we can calculate the sample variance and deviation with the following table

Class Midpoint (Xi) fi Xi*fi Xi^2 *fi

120.6-123.6 122.1 17 2075.7 253443

123.7-126.7 125.2 49 6134.8 768077

126.8-129.8 128.3 29 3720.7 477365.8

129.9-132.9 131.4 41 5387.4 707904.4

133.0-136.0 134.5 35 4007.5 633158.8

___________________________________________

Total 171 22026.1 2839948.85

For this case we can calculate the mean or expected value with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i f_i}{n}= \frac{22026.1}{171}=128.81$

Now we can calculate the sample variance with the following formula:

$s^2 =\frac{\sum f_i X^2_i -[\frac{(\sum X_i f_i)}{n}]^2}{n-1}$

And if we replace we got:

$s^2 = \frac{2839948.85- \frac{(22026.1)^2}{171}}{171-1}= 16.59$

And the standard deviation would be the square root of the variance and we got:

$s= \sqrt{16.59}=4.07$

7 0

4 years ago

James decides to invest money in Wal-Mart. As a shareholder, he has the advantage of

irakobra [83]

Answer:

A. limited liability

Step-by-step explanation:

Because James has become a shareholder by investing in Walmart, he has the advantage of limited liability. This basically means that he shares in both the gains and the losses of Walmart's business decisions but only up to the amount that he has invested into it. Meaning that if James invested a total of $2000 and Walmart goes under, then he will lose all $2000 but not more than that.

6 0

4 years ago

Compare the following 3/5 and 6/11

Cerrena [4.2K]

Answer: in decimal form, 3/5=0.6 and 6/11=0.54. From this, we can tell that 3/5 is greater than 6/11. I believe this is what you mean by compare them, this is comparing their values.

6 0

4 years ago

3.345 3.35 3.3which one is farthest

joja [24]

3。35 is the farthest away from zero

6 0

3 years ago

How many lines of symmetry does a regular polygon with 16 sides have?

denpristay [2]

It has 16 lines of symmetry as well.

5 0

4 years ago