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Zanzabum
3 years ago
9

Solve for m 3−2(9+2m)=m

Mathematics
2 answers:
padilas [110]3 years ago
7 0

the answer is m= -3

distribute the -2 then solve

rodikova [14]3 years ago
4 0

m = -3

3-2*(9+2*m)-(m)=0

Step One :

(3 - 2 • (2m + 9)) - m = 0

Step Two: None.

Pulling them out like terms.

-5m - 15 = -5 • (m + 3)

Step Three:

-5 • (m + 3) = 0

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Answer:

The calculated value of t= 0.1908 does not lie in the critical region t= 1.77 Therefore we accept our null hypothesis that  fatigue does not significantly increase errors on an attention task at 0.05 significance level

Step-by-step explanation:

We formulate null and alternate hypotheses are

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Where u1 is the group tested after they were awake for 24 hours.

The Significance level alpha is chosen to be ∝ = 0.05

The critical region t ≥ t (0.05, 13) = 1.77

Degrees of freedom is calculated df = υ= n1+n2- 2= 5+10-2= 13

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The pooled estimate for the common variance σ² is

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Sp = 105.25

The test statistic is

t = (x`1- x` ) /. Sp √1/n1 + 1/n2

t=   11/ 105.25 √1/5+ 1/10

t=  11/57.65

t= 0.1908

The calculated value of t= 0.1908 does not lie in the critical region t= 1.77 Therefore we accept our null hypothesis that  fatigue does not significantly increase errors on an attention task at 0.05 significance level

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3 years ago
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3 years ago
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oksian1 [2.3K]
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Answer:

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