The Test Scores for a Statistics course are given in the Excel below.

Mathematics

1 answer:

erastovalidia [21]3 years ago

3 0

Answer:

4.521 ( A )

Step-by-step explanation:

The determine the F-STAT employ the use of one way anova in excel to solve the problem. the way to solve this using one way anova by excel is

enter the data given in excel
after entering the Data , click on Data analysis, click One way anova, Select data,click on label in first row, then click ok

Attached is the image of the excel solution

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Solve the quadratic equation by completing the square. x^2+14x+47=0. What is the form and solution?

Phoenix [80]

To complete a square for ax²+bx+c, you first make a=1.
in this case, a is already 1
move c to the right side: x²+14x=-47
next, add (1/2 of b)² to both sides, in this case, b=14, half of 14 is 7, so x²+14x+ 7²=-47+7²
the left side is now a perfect square: (x+7)²=2
x+7=√2 or x+7=-√2
x=√2-7, or x=-2-√7

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mr Goodwill [35]

Answer:

3 ,5 , and 2

Step-by-step explanation:

Hope it helps :)

7 0

3 years ago

Simplify: 26 - 2(7 + 3^2)<br><br> please answer with one of the options below:)

ad-work [718]

-6 so option D is the answer

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3 years ago

The ratio of boys to girls is 3:2. If there are a total of 20 children in Mrs. Nelson's class, how many are girls?

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12:8

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8 0

3 years ago

a man is 18 years older than his son. 3 years ago he was 4 times as old as his son how old is the man now

Andru [333]

Answer:

The man is 27 years old.

Step-by-step explanation:

You can create a system of equations.
Let x = the age of the man
Let y = the age of his son
You can create the following equations based on what was given in the problem:
1. x = y + 18
2. (x - 3) = 4(y - 3)
You can simplify the second equation:
x - 3 = 4y - 12
x = 4y - 9
Then, solve the system of equations:
x = y + 18
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x = 4y - 9
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0 = -3x + 27
The son's age is 9, therefore the father is 27 years old.

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2 years ago