Plz help me on this question

Question

asked Oct 22, 2022 170k views

1 Answer

Victor Chekalin · Answer 1 · 2022-10-27T07:19:41+0000

Explanation:

Given

Alec has a 95% chance of passing

Joe has a 25% chance of passing

(a)Probability of passing both is

P=0.95* 0.25=0.2375

(b)Probability of both failing

$P=(1-0.95)\cdot (1-0.25)=0.05* 0.75\\P=0.0375$

(c)Joe Passes and Alec fails

$P=(1-0.95)\cdot 0.25=0.05* 0.25\\P=0.0125$

(d) Alec passes and Joe fails

$P=0.95* (1-0.25)=0.95* 0.75\\P=0.7125$