Allegheny bank has a branch at the local community college. the branch is the busiest at the beginning of the college year when freshman open accounts. this year, freshman arrived at the office at a rate of 3 every 12 minutes. on average, it takes the allegheny bank staff person about 2.5 minutes to process each account application. the bank is considering having one or two tellers. each teller is paid $15 per hour and the cost of waiting in line is assumed to be $19 per hour. a. what is the probability that 2 or less than 2 customers are in the line? b. what is the average time that a students waits before having a teller take care of their request? c. what is the system cost per hour with the single teller? d. if 2 tellers are now employed, what is the time in the system? e. what is the cost of the system based on 2 tellers? f. what is the cost savings or increase by adding a second teller?

Email viruses are typically launched by people who modify header information to hide their identity. brightmail's enrique salem says that in the future, your email reader will authenticate the sender before putting hte message in your inbox. that way, you will know the source of all the emails you read. alan nugent of novell says, "i'm kind of a fan of eliminating anonymity if that is the price for security." will eliminating anonymity make computers more secure?

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An employer who is considering hiring eva has asked donna, eva’s former supervisor, for a report on eva. in truth, eva’s work for donna has been only average. however, eva is donna’s friend, and donna knows that eva probably will not get the job if she says anything negative about eva, and donna knows that eva desperately needs the job. further, donna knows that if the situation were reversed, she would not want eva to mention her deficiencies. nevertheless, it has been donna’s policy to reveal the deficiencies of employees when she has been asked for references by employers, and she knows that some of eva’s faults may be bothersome to this particular employer. finally, this employer has leveled with donna in the past when donna has asked for a report on people who have worked for him. should donna reveal deficiencies in eva’s past performance? (remember to use one of the three moral theories acceptable for this test to solve this dilemma. any discussion of any personal opinion, religious perspective, or theory other than the moral theories acceptable for this test will result in a score of "0" for this question.)