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Salsk061 [2.6K]
3 years ago
10

You read 50 pages in an hour. Your sister reads 40 pages in an hour. Explain how to find out how many more pages you read than y

our sister reads in 1/2 hour?
Mathematics
2 answers:
Pachacha [2.7K]3 years ago
7 0
25 for 50 pages and 20 for 40 pages
devlian [24]3 years ago
6 0
Since 1/2 is equal to a half, you divide 50 and 40 by 2 and you'll get 25 and 20 and then you subtract 25 and 20 and you get 5 which is the answer!
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Answer:

C. (36337.32, 48968.68)

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:

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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

Now, find M as such

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

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So the correct answer is:

C. (36337.32, 48968.68)

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<h3>that is in my answer</h3>

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Step-by-step explanation:

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