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STALIN [3.7K]
2 years ago
9

10 + 2n = 8n - 2n + 10

Mathematics
1 answer:
galina1969 [7]2 years ago
5 0

Answer:

n=0

Step-by-step explanation:

Rearrange

10+2=8−2+10

2+10=8−2+10

Combine like terms

2n+10=<u>8n−2n</u>+10

2+10=<u>6</u>+10

Subtract from both sides

2+10=6+10

2+10<u>−10=</u>6+10<u>−10</u>

Simplify

2n=6n

Subtract both sides from 6n of the equation

2=6

2<u>−6</u>=6<u>−6</u>

Solution

n=0

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Step-by-step explanation:

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Read 2 more answers
You are conducting a study to see if the proportion of voters who prefer Candidate A is significantly different from 0.36. With
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Answer:

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Step-by-step explanation:

Data given and notation n  

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\hat p estimated proportion of interest

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z would represent the statistic (variable of interest)

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Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the true proportion is 0.36 so then we need to conduct a two tailed test, the system of hypothesis are.:  

Null hypothesis:p=0.36  

Alternative hypothesis:p \neq 0.36  

When we conduct a proportion test we need to use the z statisitc, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

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Since is a bilateral test the p value would be:  

p_v =2*P(z>2.074)=0.0381  

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