HELP!! Im not sure what i did wrong!!

Mathematics

1 answer:

Igoryamba3 years ago

7 0

I'm not sure what exactly you did wrong, but I agree with you that the sample size is too small, so the correct answer will probably be the fourth options. Hope that this gives you some confidence, and 'm sorry not to be able to help you any further...

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There is a sales tax of $6 on an item that costs $63 before tax. A second item costs $210 before tax. What is the sales tax on t

Law Incorporation [45]

The first thing you should do in this case is calculate the tax percentage.
We then have to apply the following rule of three:
$ 63 ----> 100%
6 $ ------> x
Clearing x we have:
x = (6/63) * (100)
x = 9.523809524%
Therefore the taxes of the second item will be
Tax = (9.523809524 / 100) * 210
Tax = 20 $
Answer:
The sales tax on the second item is:
Tax = 20 $

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3 years ago

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Zinaida [17]

Answer:

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Step-by-step explanation:

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3 years ago

Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to sta

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Answer: r represents a significant linear correlation.

Step-by-step explanation:

GIven : Linear correlation coefficient: r = 0.543

Sample size: n= 25

Significance levle: $\alpha=0.05$

Degree of freedom : n-2 = 25-2=23

Now, we check r critical value table for value with df = 23 and $\alpha=0.05$ .

Critical value = ±0.396 [From r critical value table]

Since r = 0.543 > 0.396, that means there is significant linear correlation.

Hence, r represents a significant linear correlation.

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3 years ago

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The answer is

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