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2 years ago

Using the common denominator of 56, what is an equivalent fraction for 3/8 and 3/7?

Mathematics

1 answer:

anyanavicka [17]2 years ago

5 0

Answer: $\frac{3}{8}$ = $\frac{21}{56}$ $\frac{3}{7}$ = $\frac{24}{56}$

Step-by-step explanation:

In order to get from 8 to 56, we have to multiply by 7.

We always do the same to the top! 3 multiplied by 7 = 21.

In order to get from 7 to 56, we have to multiply by 8.

We always do the same to the top! 3 multiplied by 8 = 24.

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The confidence interval for the difference of two proportions would be given by this formula

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We have all the values except the value for $z_{\alpha/2}$

So we can find it like this:

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And solving for $z_{\alpha/2}$ we got:

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And we can find the value for $\alpha/2$ with the following excel code:

"=1-NORM.DIST(2.326,0,1,TRUE)"

And we got $\alpha/2 =0.01$ so then the value for $\alpha=0.02$ and then the confidence level is given by: $Conf=1-0.02=0.98$ or 98%

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Using the common​ denominator of 56, what is an equivalent fraction for 3/8 and 3/7?

Using the common denominator of 56, what is an equivalent fraction for 3/8 and 3/7?