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Nesterboy [21]
3 years ago
10

Factor completely. a2 + 28 a + 27

Mathematics
1 answer:
solong [7]3 years ago
6 0
I'm guessing you mean a^2? if so then,
a^2+28a+27=
(a+1)(a+27)
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You are an assistant director of the alumni association at a local university. You attend a presentation given by the university
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(0.102, -0.062)

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sample size in 2018 = n1 = 216

sample size in 2017 = n2 = 200

number of people who went for another degree in 2018 = x1 = 54

number of people who went for another degree in 2017 = x2 = 46

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now we have to solve for the confidence interval =

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0.25 -0.23 ± 1.96*\sqrt{((1 - 0.25) * 0.25)/216 + ((1 - 0.23) *0.23/200}

= 0.02 ± 1.96 * 0.042

= 0.02 + 0.082 = <u>0.102</u>

= 0.02 - 0.082 = <u>-0.062</u>

<u>There is 95% confidence that there is a difference that lies between  - 0.062 and 0.102 on the proportion of students who continued their education in the years, 2017 and 2018.</u>

<u></u>

<u>There is no significant difference between the two.</u>

5 0
3 years ago
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