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kkurt [141]
2 years ago
14

What is the answer for this math 4- -13=!

Mathematics
1 answer:
Flauer [41]2 years ago
6 0
4 - (-13) = 17

Hope this helps!
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Which critical value is appropriate for a​ 99% confidence level where nequals​17, sigma is​ unknown, and the population appears
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Answer:

t Subscript alpha divided by 2 = 2.921

Step-by-step explanation:

With sample sizes lower than 30, we use the t-test.

Otherwise, we use the z-test.

Here, n = 17

So we use the t-test.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 17 - 1 = 16

Now, we have to find a value of T, which is found looking at the t table, with 16 degrees of freedom(y-axis) and a confidence level of 0.99(t_{1 - (\frac{1-0.99}{2}}) = 0.995). So we have T = 2.921

So the correct answer is:

t Subscript alpha divided by 2 = 2.921

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3 years ago
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One number is 4 more than another number. If the greater number is x, what is the other number?
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first number: x

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Last year there were 1,435 8th grade students enrolled at your sc hool. This year there are 1,220. What is the percent change in
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Step-by-step explanation:

All you have to do it multiply!

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