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Sholpan [36]
3 years ago
11

5+5=10+10=20-10=10-5=5

Mathematics
1 answer:
defon3 years ago
5 0

Answer:

Correct!

Step-by-step explanation:

The final answer is 5.

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What is the solution to this equation?
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x -  9 = 17

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A publisher reports that 45% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is
nexus9112 [7]

Answer:

z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933  

p_v =2*P(z  

Step-by-step explanation:

Information given

n=370 represent the sample selected

\hat p=0.4 estimated proportion of  readers owned a laptop

p_o=0.45 is the value that we want to test

z would represent the statistic

p_v represent the p value

Creating the hypothesis

We need to conduct a hypothesis in order to test if the true proportion of readers owned a laptop is different from 0.45, the system of hypothesis are:  

Null hypothesis:p=0.45  

Alternative hypothesis:p \neq 0.45  

The statistic is:

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

Replacing we got:

z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933  

Calculating the p value  

We have a bilateral test so then the p value would be:

p_v =2*P(z  

8 0
3 years ago
What will your tax refund be if you owe $2,142.99 in taxes and have already paid $2,700.27?
Vladimir [108]

Answer:

557.28

Step-by-step explanation:

since it is a refund you subtract the amount due from the amount paid to get 2700.27 - 2142.99 = 557.25

8 0
3 years ago
Read 2 more answers
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