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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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