A bank branch located in a commercial district of a city has the business objective of developing an improved process for serving customers during the noon-to-1:00 P.M. lunch period. The waiting time, in minutes, is defined as the time the customer enters the line to when he or she reaches the teller window. Data are collected from a sample of 15 customers during this hour. Another bank branch, located in a residential area, is also concerned with the noon-to-1 P.M. lunch hour. The waiting times, in minutes, are also collected from a sample of 15 customers during this hour. Complete parts (a) through (c) below. The following is the list of time data gathered from the bank branch in the commercial district.
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
A bank branch located in a commercial district of a city has the business objective of developing an improved process for serving customers during the noon-to-1:00 P.M. lunch period. The waiting time, in minutes, is defined as the time the customer enters the line to when he or she reaches the teller window. Data are collected from a sample of 15 customers during this hour. Another bank branch, located in a residential area, is also concerned with the noon-to-1 P.M. lunch hour. The waiting times, in minutes, are also collected from a sample of 15 customers during this hour. Complete parts (a) through (c) below.
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4.55
|
5.89
|
3.44
|
5.03
|
4.08
|
2.25
|
3.65
|
3.58
|
|
|
4.69
|
6.03
|
0.66
|
5.72
|
6.17
|
6.65
|
3.38
|
|
|
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9.44
|
5.07
|
8.98
|
5.13
|
8.87
|
3.86
|
8.65
|
8.91
|
|
|
10.38
|
6.21
|
5.97
|
4.22
|
6.28
|
9.98
|
5.71
|
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List the five-number summaries of the waiting times at the two bank branches.
The five-number summary of the waiting times at the bank branch in the commercial district is ___, ____, ____, ____, ____.
(Type integers or decimals. Do not round. Use ascending order.)
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