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Nastasia [14]
3 years ago
9

The price of a four-star dinner was $100 two decades ago. A report says that a dinner is 250% of what it was 20 years ago, how m

uch would it be
​
Mathematics
1 answer:
Nastasia [14]3 years ago
5 0

wheoemslaowoaaueiedrs

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svetlana [45]
This is a trapezoid and the trapezoid formula is b1 plus b2/ 2 times height. 

17 plus 5 is 22. Divided by 2 is 11. 

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3 years ago
Suppose the population standard deviation is σ = 5 , an SRS of n = 100 is obtained, and the confidence level is chosen to be 98%
beks73 [17]

Answer:

1.165.

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{1-0.98}{2} = 0.01

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}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this problem, we have that:

\sigma = 5, n = 100. So

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

M = 2.33*\frac{5}{\sqrt{100}} = 1.165

So the correct answer is:

1.165.

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3 years ago
What is: <br><br><br> -24 - (-64)
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Answer:

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Step-by-step explanation:

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Answer:i dont think so

Step-by-step explanation:

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What is the expanded form of this number?
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