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2 years ago

What fraction is 10 minutes of an hour.

Mathematics

2 answers:

wlad13 [49]2 years ago

6 0

Answer:

0.167

Step-by-step explanation:

antiseptic1488 [7]2 years ago

5 0

Answer:

0.167

Step-by-step explanation:

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2 years ago

Find the margin of error for a 90% confidence interval when the standard deviation is LaTeX: \sigma= 50????=50 and LaTeX: n = 25

Murrr4er [49]

Answer:

The margin of error for a 90% confidence interval is 16.4

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 25

Standard deviation = 50

$z_{critical}\text{ at}~\alpha_{0.10} = \pm 1.64$

Margin of error =

$z_{critical}\times \dfrac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$1.64\times \dfrac{50}{\sqrt{25}} = 16.4$

Thus, the margin of error for a 90% confidence interval is 16.4

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3 years ago