MathCastle
Statistics & DataSuperchallengeSampling Distributions

Sampling Distributions · Superchallenge problem

In a population the true proportion with a trait is p=0.4p = 0.4. For a random sample of n=10n = 10, a student estimates p(1−p)p(1-p) by plugging in the sample proportion: p^(1−p^)\hat p(1-\hat p). What is the expected value of this estimate? Express your answer as a common fraction.