The number of arrivals per minute at a bank located in the central business district of a large city was recorded over a period of 200 minutes, with the results shown in the table below. Complete (a) through (c) to the right. Arrivals Frequency 16 34 48 40 27 19The manager of the commercial mortgage department of a large bank has collected data during the past two Number Approved Frequency g. 1,rears conceming the number of commercial mortgages approved per week. The results from these two years i] 12 (104 weeks} are shown to the light. 1 24 2 36 3. Compute the expected number oi mortgages approved per week. 3 15 b. Compute the standard deviation. 4 9 c. What is the probability that there will be more than one commercial mortgage approved in a given week? 5 5 6 1 I" 'l Astudent is taking a multiplechoice exam in which each question has ve choices. Assuming that she has no knowledge of the correct answers to any of the questions, she has decided on a strategy in which she will place ve balls [marked A, B, C, D, and E} into a box. She randomly selects one ball tor each question and replaces the ball in the box. The marking on the ball will determine her answer to the question. There are six multiple-choice questions on the exam. Complete parts [a] through (11} below. Assume that the number of new visitors to a website in one hour is distributed as a Poisson random variable. The mean number of new visitors to the website is 2.2 per hour. Complete parts {a} through [d] below