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Anarel [89]
2 years ago
11

What is the solution to this system of equations?

Mathematics
2 answers:
iogann1982 [59]2 years ago
5 0

Answer:

4

Step-by-step explanation:

murzikaleks [220]2 years ago
4 0

Answer:

4 is answer

Step-by-step explanation:

y=2 x=6-2 x=4

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A software developer wants to know how many new computer games people buy each year. Assume a previous study found the standard
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The minimum sample size required to ensure that the estimate has an error of at most 0.14 at the 95% level of confidence is n=567.

Step-by-step explanation:

We have to calculate the minimum sample size n needed to have a margin of error below 0.14.

The critical value of z for a 95% confidence interval is z=1.96.

To do that, we use the margin of error formula in function of n:

MOE=\dfrac{z\cdot \sigma}{\sqrt{n}}\\\\\\n=\left(\dfrac{z\cdot \sigma}{MOE}\right)^2=\left(\dfrac{1.96\cdot 1.7}{0.14}\right)^2=(23.8)^2=566.42\approx 567

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