Question

A sample of size 100 is selected from a population with p = 0.50.

(a) What is the expected value of p?

(b) What is the standard error of p? (Round your answer to four decimal places.)

Answer 1

Solution

Given that,

p = 0.50

1 - p = 1 - 0.50 = 0.5

n = 100

(a)

Expected value  = p = 0.50

(b)

=  p ( 1 - p ) / n

=   (0.50 * 0.5) / 100 =

= 0.05

Standard error = 0.05