I need help with solving this practice problem. If you could provide an elementary explanation. That would be helpful in understanding the problem.

1. The service manager for a new automobile dealership reviewed dealership records of the past 20

sales of new cars to determine the number of warranty repairs he will be called on to perform in the

next 90 days. Corporate reports indicate that the probability any one of their new cars needs a warranty

repair in the first 90 days is 0.05. The manager assumes that calls for warranty repair are independent of

one another. What is the distribution for the number of warranty repairs he will be called on to perform

in the next 90 days for this batch of 20 new cars sold?

a) uniform distribution

b) poisson distribution

c)normal distribution

d) binomial distribution