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Ira Lisetskai [31]
2 years ago
14

Danny made 84 cupcakes on Monday and n cupcakes on Tuesday. Which expression shows how many more cupcakes Danny made on Monday t

han Tuesday?
A. 84-n
B. 84+n
C. n=84
D. n-84
Mathematics
1 answer:
Veronika [31]2 years ago
6 0

Answer:

84- n

A is the correct answer.

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Answer:

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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 1-0.01 = 0.99, so z = 2.33

Now, find the margin of error M as such

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

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In this problem, we have that:

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So the correct answer is:

1.165.

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