Your restaurant serves an average of 23 customers per half hour. What is the probability that during the next half hour you will see more than 23 customers? Hint: you might need to use a software package such as excel to avoid spending an hour on this problem. (Answer to the third decimal place).]
During a quality control routine at the light bulb factory you pull a case of 100 bulbs. Suppose that each case has 3 bad bulbs. If you draw one package of 4 bulbs from the case what is the probability that you will see exactly 1 bad bulb? (Answer to the third decimal place).