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soldi70 [24.7K]
2 years ago
15

1/3 (6y - 9) = -2y + 13 what is the answer?

Mathematics
1 answer:
Alex777 [14]2 years ago
6 0

Answer:

4

Step-by-step explanation:

1/3(6y-9)=-2y+13

6/3y-9/3=-2y+13

2y-3=-2y+13

2y-(-2y)-3=13

2y+2y-3=13

4y-3=13

4y=13+3

4y=16

y=16/4

y=4

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A research team is testing whether a fuel aditive increases a car's gas mileage. The maker of the additive claims that the addit
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Answer:

Yes  there is sufficient evidence to  reject the company's evidence

Step-by-step explanation:

From the question we are told that  

   The sample size is  n =  25

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    The z-score is  z = -1.94

The null hypothesis is  H_o : \mu = 6 \ mpg

The alternative hypothesis is  H_a :  \mu \ne 6

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           p-value   =  2 * P( Z

From the z table  the area under the normal curve to the left corresponding to    -1.94  is

         P( Z

=>  p-value   =  2 * 0.02619

=>  p-value   =  0.052

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Fail to reject the null hypothesis

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