you roll a die with the sample space s = {1, 2, 3, 4, 5, 6}. you define a as {1, 3, 5}, b as {2, 3, 4, 5…

you roll a die with the sample space s = {1, 2, 3, 4, 5, 6}. you define a as {1, 3, 5}, b as {2, 3, 4, 5, 6}, c as {4, 5}, and d as {3, 5, 6}. determine which of the following events are exhaustive and/or mutually exclusive.\n a. a and b\n b. a and c\n c. a and d\n d. b and c\n exhaustive\n mutually exclusive
Answer
Explanation:
Step1: Recall definitions
Exhaustive events: Their union is the sample - space. Mutually exclusive events: They have no common elements.
Step2: Analyze A and B
$A={1,3,5}$, $B = {2,3,4,5,6}$. $A\cup B={1,2,3,4,5,6}=S$, but $A\cap B = {3,5}\neq\varnothing$, so not mutually exclusive.
Step3: Analyze A and C
$A={1,3,5}$, $C={4,5}$. $A\cup C={1,3,4,5}\neq S$, and $A\cap C = {5}\neq\varnothing$, so neither exhaustive nor mutually exclusive.
Step4: Analyze A and D
$A={1,3,5}$, $D={3,5,6}$. $A\cup D={1,3,5,6}\neq S$, and $A\cap D={3,5}\neq\varnothing$, so neither exhaustive nor mutually exclusive.
Step5: Analyze B and C
$B = {2,3,4,5,6}$, $C={4,5}$. $B\cup C={2,3,4,5,6}\neq S$, and $B\cap C={4,5}\neq\varnothing$, so neither exhaustive nor mutually exclusive.
Answer:
None of the given pairs are both exhaustive and mutually exclusive.