Question

A random sample of 420 new ford trucks showed that 105 required repairs within the first warranty year.

a. what is the probability that a new ford truck will need repairs within the first warranty year?
b. what is the probability that a new ford truck will not need repairs within the first warranty year?
c. what is the sample space in this problem?

Answer 1

A) 105/420=0.25=25%
B) 100%-25%=75%=0.75
C) I don't know the right answer!
Hope could help :)