HMK3 Questions.pdf - MGSC 2301 – Statistics HMK#3 – Chapter...

MGSC 2301 – Statistics
HMK#3 – Chapter 4 – Introduction to Probability
(14 questions, 36 sub questions, around 2.5 points each)
1. Determine whether the following probabilities are best categorized as subjective, empirical, or
classical probabilities.
a. Before flipping a fair coin, Sunil assesses that he has a 50% chance of obtaining tails.
b. At the beginning of the semester, John believes he has a 90% chance of receiving straight A’s. c. A political reporter announces that there is a 47% chance that the next person to come out of the
conference room will be a Republican, since there are 66 Republicans and 75 Democrats in the
room.
Subjective probability
Empirical probability
Classical probability
rev: 06_07_2019_QC_CS-170121
2. A sample space S yields five equally likely events, A , B , C , D , and
a. Find P ( D ). (Round your answer to 2 decimal places.)
E .
b. Find P(B
c
) . (Round your answer to 2 decimal places.)
c. Find P ( A U C U E ). (Do not round intermediate calculations. Round your answer to 2
decimal places.)