The following data represents the interarrival time of customers to a doctor’s office. Obs # t

Question: The following data represents the interarrival time of customers to a doctor’s office.

Obs #	t
1	15.2
2	12.5
3	19.8
4	18.2
5	13.4
6	14.9
7	16.2
8	16.5
9	17.8
10	15.3
11	18.5
12	17.3
13	20.5
14	14.1
15	12.6
16	13.4
17	13.4
18	12.5
19	13.4
20	15.5

Using this data answer questions 1-3:

A. Develop a histogram for the interarrival times.

B. Determine the mean, standard deviation, range, sample variance, and confidence level.

C. Hypothesize a theoretical distribution for the data above and give a reason.

D. The distribution of the process with the corresponding statistical data below would be deemed to be: a) skewed positive b) skewed negative or c) have zero skew?

Mean	265
Standard Error	18.5
Median	158
Mode	68
Standard Deviation	163
Sample Variance	20149
Kurtosis	3.2
Skewness	2.59
Range	782
Minimum	30
Maximum	795
Sum	18722
Count	100
Confidence Level(95.0%)	29.09