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choli [55]
3 years ago
14

Find the value of x. Round your answer to the nearest tenth. 15 27

Mathematics
1 answer:
Lina20 [59]3 years ago
6 0

Answer:

x ≈ 1318.2

Step-by-step explanation:

tan(\frac{x}{15}) = 27         <em>Tangent = opposite over adjacent</em>

<em />tan^{-1}[tan(\frac{x}{15})] = tan^{-1}(27)<em />

<em />\frac{x}{15} = tan^{-1}(27)<em />

<em />x = 15[tan^{-1}(27)]<em />

x ≈ 1318.2

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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)

Step-by-step explanation:

sample size in 2018 = n1 = 216

sample size in 2017 = n2 = 200

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

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At 95% confidence level, z critical = 1.96

now we have to solve for the confidence interval =

<h2> p1 -p2 ± z*\sqrt{((1-p1)*p1)/n1 + ((1-p2)*p2/n2}</h2>

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>

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