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kiruha [24]
3 years ago
9

A statistics graduate student conducted an experiment about graduate students who lived on campus. After taking a simple random

sample of 65 students, she found that twelve students lived on campus. What is the standard error she calculated?
Give your answer to 3 decimal places. For help on how to input a numeric answer, please see "Instructions for inputting a numeric response."
Mathematics
1 answer:
dimaraw [331]3 years ago
7 0

Answer:

She calculated a standard error of 0.048.

Step-by-step explanation:

A proportion p is the number of desired outcomes divided by the number of total outcomes.

The standard error of a proportion is given by:

SE_{p} = \sqrt{\frac{p(1-p)}{n}}

In which n is the size of the sample.

In this problem, we have that:

Desired outcomes:

12 students living on campus

Total outcomes:

All the 65 students

Proportion:

p = \frac{12}{65} = 0.1846

Standard error of the proportion:

SE_{p} = \sqrt{\frac{0.1846*0.8154}{65}} = 0.048

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Answer:

2

Step-by-step explanation:

f(x)=2x^2+9x-5

When we are find how many times it intersects the x axis, we are finding the zero's. Set the equation equal to zero

0=2x^2+9x-5

Factor the equation

0 = (2x+1) (x-5)

2*1

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Then using the zero product property

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2x = -1    x=5

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Answer:

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anzhelika [568]

Answer:

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Step-by-step explanation:

sorry it took so long

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Marizza181 [45]
4 1/3
Hope this helped :) 
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Read 2 more answers
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