Question
Time 73 19 15 63 27 27 32 94 62 57 32 57 25 20 44 48 16 16 16 94 98 62 52 54
Time
73
19
15
63
27
27
32
94
62
57
32
57
25
20
44
48
16
16
16
94
98
62
52
54
64
15
16
In certain states, savings banks are permitted to sell life insurance. The approval process consists of underwriting, which includes a review of the application, a medical information bureau check, possible requests for additional medical information and medical exams, and a policy compilation stage, in which the policy pages are generated and sent to the bank for delivery. The ability to deliver approved policies to customers in a timely manner is critical to the profitability of this service to the bank. Using the DCOVA framework, the variable of interest is defined as the total processing time in days. Data in the accompanying table are collected by selecting a random sample of 27 approved policies during a period of one month. Complete parts a through c.
a. Compute the mean, median, first quartile, and third quartile.
Mean = _____? (Round to two decimal places as needed.)
Median = _____? (Type an integer or decimal. Do not round.)
First quartile = _____? (Type an integer or decimal. Do not round.)
Third quartile = _____? (Type an integer or decimal. Do not round.)
b. Compute the range, interquartile range, variance, standard deviation, and coefficient of variation.
Range =_____? (Type an integer or a decimal. Do not round.)
Interquartile Range =_____? (Type an integer or a decimal. Do not round.)
Sample variance = _____? (Round to two decimal places as needed.)
Sample standard deviation = _____? (Round to two decimal places as needed.)
Coefficient of variance = _____? (Round to two decimal places as needed.)
c. What would you tell a customer who enters the bank to purchase this type of insurance policy and asks how long the approval process takes? (Choose the correct bold answer)
The mean approval process takes 44.37/689.47/44 days with 50% of the policies being approved in less than 44/43/27 days. The middle 50% of the applications are approved between 16 and 63 / 19.5 and 62 days. About 68% of the applications are approved between 17.11 and 71.63 / 18.11 and 70.63
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