The owner of an automobile repair shop studied the waiting times for customers who arrive at the shop for an oil change. The following data with waiting times in minutes were collected over a one-month period. 2 5 22 6 5 0-4 5-9 10-14 (a) Develop a frequency distribution using classes of 0-4, 5-9, 10-14, 15-19, and 20-24. Class 15-19 20-24 Total 5 6 7 15 21 0-4 5-9 10-14 15-19 20-24 Class Total 0-4 5-9 10-14 Class 15-19 0-4 20-24 5-9 (b) Develop a relative frequency distribution using the classes in part (a). If required, round your answers to two decimal places. Relative Frequency 11 4 9 6 Class 16 10-14 15-19 12 21 8 20-24 9 10 Frequency 2 % 10 3 2 3 20 .1 .50 (c) Develop a cumulative frequency distribution using the classes in part (a) .15 .1 .15 1 M ✔ ✔ ✔ S (d) Develop a cumulative relative frequency distribution using the classes in part (a). If required, round your answers to two decimal places. 10 ✔ ✓ ✔ ✔ ✔ Cumulative Frequency Cumulative Relative Frequency X X (e) What proportion of customers need an oil change who wait 9 minutes or less?
The owner of an automobile repair shop studied the waiting times for customers who arrive at the shop for an oil change. The following data with waiting times in minutes were collected over a one-month period. 2 5 22 6 5 0-4 5-9 10-14 (a) Develop a frequency distribution using classes of 0-4, 5-9, 10-14, 15-19, and 20-24. Class 15-19 20-24 Total 5 6 7 15 21 0-4 5-9 10-14 15-19 20-24 Class Total 0-4 5-9 10-14 Class 15-19 0-4 20-24 5-9 (b) Develop a relative frequency distribution using the classes in part (a). If required, round your answers to two decimal places. Relative Frequency 11 4 9 6 Class 16 10-14 15-19 12 21 8 20-24 9 10 Frequency 2 % 10 3 2 3 20 .1 .50 (c) Develop a cumulative frequency distribution using the classes in part (a) .15 .1 .15 1 M ✔ ✔ ✔ S (d) Develop a cumulative relative frequency distribution using the classes in part (a). If required, round your answers to two decimal places. 10 ✔ ✓ ✔ ✔ ✔ Cumulative Frequency Cumulative Relative Frequency X X (e) What proportion of customers need an oil change who wait 9 minutes or less?
Principles Of Marketing
17th Edition
ISBN:9780134492513
Author:Kotler, Philip, Armstrong, Gary (gary M.)
Publisher:Kotler, Philip, Armstrong, Gary (gary M.)
Chapter1: Marketing: Creating Customer Value And Engagement
Section: Chapter Questions
Problem 1.1DQ
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Transcribed Image Text:The owner of an automobile repair shop studied the waiting times for customers who arrive at the shop for an oil change. The following data with waiting times in minutes were collected over a one-month period.
2
5
22
6
5
0-4
5-9
10-14
(a) Develop a frequency distribution using classes of 0-4, 5-9, 10-14, 15-19, and 20-24.
Class
15-19
20-24
Total
5
6
7
15
21
0-4
5-9
10-14
15-19
20-24
Class
Total
0-4
5-9
10-14
Class
15-19
0-4
20-24
5-9
(b) Develop a relative frequency distribution using the classes in part (a). If required, round your answers to two decimal places.
Relative
Frequency
11
4
9
6
Class
16
10-14
15-19
12
21
8
20-24
9
10
Frequency
2
%
10
3
2
3
20
.1
.50
(c) Develop a cumulative frequency distribution using the classes in part (a)
.15
.1
.15
1
M
✔
✔
✔
S
(d) Develop a cumulative relative frequency distribution using the classes in part (a). If required, round your answers to two decimal places.
10
✔
✓
✔
✔
✔
Cumulative
Frequency
Cumulative
Relative
Frequency
X
X
(e) What proportion of customers need an oil change who wait 9 minutes or less?
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