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.)
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
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