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Bezzdna [24]
3 years ago
6

Factor completely, then place the factors in the proper location on the grid.

Mathematics
1 answer:
Lyrx [107]3 years ago
6 0
4(x+5y)(x-3y)
I don't know what you mean by placing the factors on the grid
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Assume that 200 babies are born to 200 couples treated with the XSORT method of gender selection that is claimed to make girls m
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Answer:

a) test statistic = 2.12

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Step-by-step explanation:

Given data :

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p = x / n = 115 / 200 = 0.575

significance level ( ∝ ) = 0.1

<em>aim : test whether the proportion of girls births after the treatment is greater than 50% that occurs without any treatment </em>.

<u>A) Determine the test statistic </u>

H0 : p = 0.5

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to determine the test statistic we will apply the z distribution at ( ∝ ) = 0.1

Z - test statistic = ( 0.575 - 0.5)  / \sqrt{0.5*0.5 / 200}  = 2.12

<u>b) determine the p-value</u>

The P-value can be determined using the normal standard table

P-value = 1 - p(Z< 2.12 )  =  1 - 0.9830 = 0.017

c) Given that the p value ( 0.017 ) < significance level ( 0.1 )

we will reject the H0 because there is evidence showing that proportion of girls birth is > 50%

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