A biased four-sided die has probabilities , , ,

MATHEMATICS · Subjective · AP · AP Statistics · Probability Random Variables Distributions · Probability Random Variables Distributions

Problem

A biased four-sided die has probabilities

P(1) = 0.2

P(2) = 0.35

P(3) = 0.25

P(4) = 0.2

. The die is rolled 400 times. Find the expected number of times the die shows a 2.