(a) Give P(An B') = 0.52, P(A) = 0.7 and P(B) = 0.2. i. Find P(An B). ii. Are A and B mutually exclusive events? iii. Hence, determine whether A and B are independent events.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
icon
Related questions
Question
(a) Give P(An B') = 0.52,P(A) = 0.7 and P(B) = 0.2.
Find P(An B).
i.
QUESTION 3
ii.
Are A and B mutually exclusive events?
iii. Hence, determine whether A and B are independent events.
(b) Janice obtained data about deaths involving Covid-19 based on the people who
had received vaccines. The total death cases of people who had received the
Sinovac vaccine are 1092 cases. Among 1328 people who had received one vaccine
dose, there were death cases on 750 people who are Sinovac vaccine recipients,
228 people who are AstraZeneca vaccine recipients and the rest are Pfizer vaccine
recipients. There were 71 death cases among people who received a second dose
of Pfizer vaccine and 5 death cases among people who received a second dose of
AstraZeneca vaccine.
i. Construct a contingency table to represent the information above.
One of these death cases is chosen at random. Hence, find the probability that the
people are
ii. Pfizer vaccine recipients or received both vaccine doses.
iii. The Sinovac vaccine recipients knowing that he does not receive the second
dose.
iv. State with a reason whether or not the events 'the deaths cases involving
people who had received AstraZeneca vaccine' and 'the deaths cases involving
people who had received both vaccine doses' are independent.
Transcribed Image Text:(a) Give P(An B') = 0.52,P(A) = 0.7 and P(B) = 0.2. Find P(An B). i. QUESTION 3 ii. Are A and B mutually exclusive events? iii. Hence, determine whether A and B are independent events. (b) Janice obtained data about deaths involving Covid-19 based on the people who had received vaccines. The total death cases of people who had received the Sinovac vaccine are 1092 cases. Among 1328 people who had received one vaccine dose, there were death cases on 750 people who are Sinovac vaccine recipients, 228 people who are AstraZeneca vaccine recipients and the rest are Pfizer vaccine recipients. There were 71 death cases among people who received a second dose of Pfizer vaccine and 5 death cases among people who received a second dose of AstraZeneca vaccine. i. Construct a contingency table to represent the information above. One of these death cases is chosen at random. Hence, find the probability that the people are ii. Pfizer vaccine recipients or received both vaccine doses. iii. The Sinovac vaccine recipients knowing that he does not receive the second dose. iv. State with a reason whether or not the events 'the deaths cases involving people who had received AstraZeneca vaccine' and 'the deaths cases involving people who had received both vaccine doses' are independent.
Expert Solution
steps

Step by step

Solved in 3 steps

Blurred answer
Recommended textbooks for you
A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability
A First Course in Probability
Probability
ISBN:
9780321794772
Author:
Sheldon Ross
Publisher:
PEARSON