Answer:
(a) 0.12
(b) 0.42
(c) 0.46
Step-by-step explanation:
Probability of student A not showing up = 0.3
Probability of student B not showing up = 0.4
(a) Neither will show up for class
[tex]P(A\ and\ B) = 0.3*0.4 = 0.12[/tex]
(b) Both will show up for class
[tex]P (A\ nor\ B) = (1-0.3)*(1-0.4) = 0.42[/tex]
(c) Exactly one will show up for class
[tex]P(A\ or\ B) = 1 -P(A\ and\ B) - P(A\ nor\ B)\\P(A\ or\ B) = 1 -0.12-0.42 = 0.46[/tex]
