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kirill [66]
2 years ago
11

Solve for x pleaseeee!

Mathematics
1 answer:
Kaylis [27]2 years ago
6 0

Answer:

x=-20

Step-by-step explanation:

3x+178=6x+238

-3x=60

x=-20

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0.9412

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Step-by-step explanation:

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2 years ago
There are 2 girls and 3 boys on a camping trip. What is the ratio of girls<br> to boys on the trip?
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Step-by-step explanation:

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2 years ago
Assume that a sample is used to estimate a population proportion μ . Find the margin of error M.E. that corresponds to a sample
hichkok12 [17]

Answer:

MoE = 1.645\cdot \frac{13.1}{\sqrt{772} } \\\\MoE = 1.645\cdot 0.47147\\\\MoE = 0.776\\\\

Step-by-step explanation:

Since the sample size is quite large, we can use the z-distribution.

The margin of error is  given by

$ MoE = z_{\alpha/2}(\frac{s}{\sqrt{n} } ) $

Where n is the sample size, s is the sample standard deviation and z_{\alpha/2} is the z-score corresponding to a 90% confidence level.

The z-score corresponding to a 90% confidence level is

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From the z-table at α = 0.05

z-score = 1.645

MoE = 1.645\cdot \frac{13.1}{\sqrt{772} } \\\\MoE = 1.645\cdot 0.47147\\\\MoE = 0.776\\\\

Therefore, the margin of error is 0.776.

3 0
2 years ago
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