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My name is Ann [436]

3 years ago

15

.I want a way to solve this question

1 answer:

Verdich [7]3 years ago

8 0

Check the picture below.

so then γ ≈ 180 - 69 - 43, γ ≈ 68.

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How to use the results of part (b) and appropriate computation formulas to compute the sample variances s2 and sample standard d

anygoal [31]

$s^2=\displaystyle\sum\frac{(x-\bar x)^2}{n-1}=\frac1{n-1}\sum(x^2-2x\bar x+{\bar x}^2)=\frac{\displaystyle\sum x^2-2\bar x\sum x+{\bar x}^2}{n-1}$

where $\bar x=22$ is the mean. Since

$\sum x^2=2568$
$\sum x=110$

you have variance

$s^2=\dfrac{2568-2(22)(110)+22^2}{5-1}=37$

and so the standard deiviation is

$s=\sqrt{37}\approx6.083$

7 0

4 years ago

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Kazeer [188]

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5 0

3 years ago

There are 480 sophomores and 520 juniors in a high school. Find the ratio of juniors to sophomores

kow [346]

Answer:

13:12, 13 to 12, or 13/12

Step-by-step explanation:

520:480

Divide both numbers by GCF (40)

13:12

4 0

3 years ago

The average length of a female white beaked Dolphin is about 111 inches what is this length in feet and inches

Svetach [21]

Well there are 12 inches in 1 foot so
12x9=108
so
111-108=3
so
The average length of a female white beaked dolphin is 9 feet and 3 inches.

3 0

4 years ago

Can someone help me now please !!!!!!!!!! <br><br> 15^10 ÷ 15^4

hichkok12 [17]

15x10=150
15x4=60
150/60=2.5

5 0

4 years ago

Read 2 more answers