Question

Plz help me on this question​

Answer 1

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`