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melomori [17]
3 years ago
6

Find the perimeter of the polygon

Mathematics
1 answer:
katen-ka-za [31]3 years ago
6 0

Answer:

11x - 2

Step-by-step explanation:

7x-6 + (3x+4) + (x)

11x -2

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4 years ago
A simple random sample of 60 items resulted in a sample mean of 65. The population standard deviation is 14. a. Compute the 95%
bazaltina [42]

Answer:

The 95% confidence interval for the population mean is between 61.5 and 68.5.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

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M = z*\frac{\sigma}{\sqrt{n}}

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M = 1.96*\frac{14}{\sqrt{60}} = 3.5

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