Math 12
Name_______________________
Professor Robles Score___________________ /
30
Math 12 Quiz #2 (Spring 2023)
All work must be clearly shown for credit.
1. Among 65 patients on clinical trial for DARZALEX, 34 experienced fatigue, 8 experienced nausea
and 2 experienced high-grade bronchitis. Based on this sample group, estimate the probability of each:
(6 pts)
a) A randomly selected person experiences fatigue. Is this a rare event?
b) A randomly selected person experiences nausea. Is this a rare event?
c) A randomly selected person experiences high-grade bronchitis. Is this a rare event?
2. As of 10/6/22, Lassen County had a 30.1% COVID vaccination rate (lowest in California). Five
people are selected at random from Lassen County, find the probability of each:
(6 pts)
a) All five are vaccinated.
b) None of the five are vaccinated.
c) At least one is vaccinated.
3. According to a recent UC Berkeley Institute of Governmental Studies – LA Times poll 55% of
registered voters favor the mandate to ban the sales of new gasoline-powered cars by 2035. If 6
registered voters are randomly selected, find the probability that at least one registered voter is in favor of
the mandate. (2 pts)
4. Suppose you randomly purchase one lottery ticket. Estimate the probability that ticket is a winner
for each game:
(2 pts)
a) Among 45 numbers you choose 5.
b) Select 6 from 36 in any order.
