Math, asked by nikhilsai0027, 17 days ago

In a random sample of 1000 students, p= 0.80 (or 80%) were in favor of longer hours at the school library. The standard error of p(the sample proportion) is (approximately)

Answers

Answered by amitnrw
1

Given : In a random sample of 1000 students,

p= 0.80 (or 80%) were in favor of longer hours at the school library.

To Find :  The standard error of p(the sample proportion) is (approximately)

Solution:

The standard error of p =   √ [p (1-p) / n)]

p = 0.8

1 - p = 1 - 0.8 = 0.2

n = 1000

=>  The standard error of p =   √ [0.8 (0.2) / 1000)]

=>  The standard error of p ≈   0.01265

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