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svp [43]
3 years ago
13

How to simplify (4•4-3•1-3•3)\[0-(-2)•(-2)

Mathematics
2 answers:
ira [324]3 years ago
5 0

Use PEMDAS

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

\dfrac{4\cdot4-3\cdot1-3\cdot3}{0-(-2)\cdot(-2)}=\dfrac{16-3-9}{-4}=\dfrac{4}{-4}=-1

dezoksy [38]3 years ago
4 0

(4•4-3•1-3•3)\[0-(-2)•(-2)]

complete the parenthesis first

(4•4-3•1-3•3)

complete the multiply and divided first from left to right

16 -3-9 =

then complete the subtraction

13-9 =4

now

[0-(-2)•(-2)]

complete the parenthesis first

do the multiplication

-2*-2

4

now subtract

0-4=-4

so we have

-4/4

Answer: -1


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Step-by-step explanation:

Hello!

You have the information of 3 groups of people.

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1. To manually calculate the mean square between the groups you have to calculate the sum of square between conditions and divide it by the degrees of freedom.

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2. The mean square error (MSE) is the estimation of the variance error (σ_{e}^2 → S_{e} ^{2}), you have to use the following formula:

Se²=<u> (n₁-1)S₁² + -(n₂-1)S₂² + (n₃-1)S₃²</u>

                        n₁+n₂+n₃-k

Se²=<u> 19*14.3 + 19*17.2 + 19*16.7 </u>= <u>  915.8   </u>  = 16.067

                 20+20+20-3                  57

DfE= N-k = 60-3= 57

3. To calculate the value of the statistic you have to divide the MSB by MSE

F= \frac{Mean square B}{Mean square E} = \frac{5.32}{16.067} = 0.33

4. P(F_{2; 57} ≤ F) = P(F_{2; 57} ≤ 0.33) = 0.28

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