35,36

PROBLEM E: Use the following to answer questions 35 - 36: A bank collects data on the number of loan applications filled incorrectly each day. Data from the previous 10 days indicate the following number of loan applications filled incorrectly per day in a sample size of 25/day: Incorrect loan applications/day Day 1 8 2 3 4 5 6 7 8 9 10 4 6 5 5 6 4 6 5 6 35. Calculate the overall proportion of incorrect loan applications/day and the standard deviation of proportions. (a) p-bar -0.220; the standard deviation of proportions = 0.0828 (b) p-bar 0.224; the standard deviation of proportions 0.0834 (c) p-bar = 0.220; the standard deviation of proportions - 0.0262 (d) p-bar = 0.220; the standard deviation of proportions = 0.006864 36. Using +30 limits, calculate the LCL and UCL for these data. (a) UCL = .4742; LCL = 0 (b) UCL = 4684; LCL - 0 (c) UCL = 302; LCL = 0.1372 (d) UCL = 245; LCL = 0.203 (e) UCL = 2268; LCL = 0.213