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3 years ago

PLEASE HELP ASAP

1 answer:

5 0

First find midpoint: $\left( \frac{-1+5}{2}, \frac{6+5}{2}\right) = (2, 5.5)$

Find slope of line that passes through R and S: slope = $\frac{6-5}{-1-5} = \frac{-1}{6}$

Negative reciprocal of slope to get slope of perpendicular: new slope = 6

Line will be: $y-5.5=6(x-2)$

$y = 6x - 6.5$

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3 years ago

Plz help on all of this these

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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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Answer:

(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

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

p1 = x1/n1 = 0.25

p2 = x2/n2 = 0.23

At 95% confidence level, z critical = 1.96

now we have to solve for the confidence interval =

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

= 0.02 ± 1.96 * 0.042

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= 0.02 - 0.082 = -0.062

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.

There is no significant difference between the two.

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3 years ago

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