I only need help answering the first question.

Burrito King (a new fast-food franchise opening up natiomwide) has successfully automated burrito productlon for its drive-up fast food establistuments. The Burro-Master 9.000 requires a constant 50 seconds to produce a batch of burntos. It has been estimated that. customers wil amive ot the ditive-up Window according to a Poisson distribution at an average of one every 75 secondis. a. What is the average walting line length (in cars)? (Do not round intermediate calculations. Round your answer to 2 decimal places.)