please help

Question 9 2 pts Problem 3: At a small airport in northern Maine there is a security checkpoint with two trained TSA screeners. The airport CEO is concerned about long lines at the screening station and is deciding whether or not to hire a third screener. After performing a time study it was determined that passengers arrived to the security screening station at an average rate of 58 per hour between 7AM and 10PM. Screening took an average of 2 minutes per passenger. Both screening and interarrivals were determined to be exponentially distributed. In addition, it was found that currently only 1.7% of passengers arrived to find no other passengers before them at security but it was estimated that if the screening station had three screeners this would increase to 12.2% of passengers. Because passengers spent so much time in screening, the CFO of the airport found that the airport was losing out on purchases typically made once inside the terminal, and estimated the losses to be $20 per hour of customer waiting time. How long do passengers wait to be screened on average? (Hint: Waiting time in queue) (two screeners, three screeners) O 128,0.77) mins O 122, 13 mins 131.0.45) mins [35, 2.34] mins Question 10 1 pts Problem 4: An accountant, Keepallyer Munny, had been losing business to a competitor down the street because of TV ads put out that said the lines were too long and the turnaround time was too slow at during tax time at Munny's. K. Munny thought this was untrue and had data from the previous year but had forgotten to record how many cases there were on average from March 1 - April 15 and also forgot to keep track of how long on average each one took to get processed and returned to the customer. From the data in K. Munny's computer system it was possible to calculate the average arrivals, an average rate of 20 requests for tax prep per day, and the average number of taxes completed in a day, an average rate of 30 tax preps. Further, the arrivals and completions were not exponential, but instead had a variance of 4 hours2 for arrivals of requests for tax prep and a variance of 2 hours^2 for the rate of completing tax preps. K. Munny's competitor claims turnaround times of half a day. Assume K. Munny works 24 hours a day. What type of model is appropriate? (M/M/1, M/D/1, M/M/c, or PK formula) O M/M/C M/D/1 PK Formula M/M/1