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Harrizon [31]
2 years ago
12

Given: 1/3 x+y= 15.

Mathematics
1 answer:
storchak [24]2 years ago
6 0

Answer:

B) [(-3, 16), (0, 15), (3, 14)]

Step-by-step explanation:

Because 1/3(-3)+16=-1+16=15,

1/3(0)+15=0+15=15,

1/3(3)+y=1+14=15.

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A random sample of 200 people was taken. 90 of the people in the sample favored Candidate A. We are interested in determining wh
mafiozo [28]

Answer:

a. 1.44

Step-by-step explanation:

We are interested in determining whether or not the proportion of the population in favor of Candidate A is significantly more than 40%.

At the null hypothesis, it is tested if the proportion is of at most 40%, that is:

H_0: p \leq 0.4

At the alternative hypothesis, it is tested if the proportion is of more than 40%, that is:

H_1: p > 0.4

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

0.4 is tested at the null hypothesis:

This means that p = 0.4, \sigma = \sqrt{0.4*0.6}

A random sample of 200 people was taken. 90 of the people in the sample favored Candidate A.

This means that:

n = 200, X = \frac{90}{200} = 0.45

Value of the test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.45 - 0.4}{\frac{\sqrt{0.4*0.6}}{\sqrt{200}}}

z = 1.44

Thus the correct answer is given by option a.

8 0
3 years ago
What is the range of the function represented by these ordered pairs?
irinina [24]
I believe it is b and hmu?
5 0
3 years ago
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24w²-16 <br><br> I need help factoring out the greatest common factor of the polynomial
mestny [16]

Hello from MrBillDoesMath!

Answer:

8 (3w^2 - 2)


Discussion:

The  greatest common factor is 8, so

24w^2 - 16 = 8 (3w^2 - 2)


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MrB

6 0
2 years ago
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Monica [59]

Answer:

c x ≤ 6

Step-by-step explanation:

2x ≤ 12

Divide each side by 2

2x/2 ≤ 12/2

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8 0
3 years ago
The parents club wants to sell buttons to raise money for the local community center sports program. The buttons cost 60 cents e
astraxan [27]

Their profit made will be 4,420

This is because 0.60 x 1300 is 780

And the amount they will make by selling is $5200, because 1300 x 4

So we will do 5200 - 780, and that is the profit made- $4,420

3 0
3 years ago
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