Voltage Measurements From a Home Home Home Home Home Full Day (volts) Day (volts) Day (volts) Day (volts) data 22 127.6 set 23 127.3 9 24 127.4 25 127.5 127.4 9. 127.7 127.5 127.3 127.4 127.5 1 127.3 127.5 127.7 127.6 127.2 127.6 127.6 15 16 17 18 19 20 21 2 127.8 3 127.6 4 10 127.8 128.0 127.2 7 11 12 13 14 127.9 127.7 127.6

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Refer to the accompanying data set (see attached image) and use the 25 home voltage measurements to construct a frequency distribution with five classes. Begin with a lower class limit of 127.1 volts, and use a class width of 0.2 volts. Does the result appear to have a normal​ distribution? Why or why​ not?

Does the result appear to have a normal​ distribution? Why or why not?
A. No, because the frequencies are roughly equal across the
voltage
classes.
B. ​No, because the frequencies are not equal across the voltage classes.                          
C. ​No, because the frequencies are randomly distributed.
D. Yes, because the frequencies are roughly equal across the voltage classes.                                             
E. Yes, because the frequencies start low, reach a maximum, then become low again,
and are roughly symmetric
Voltage Measurements From a Home
Home
Home
Home
Home Full
Day (volts) Day (volts) Day (volts) Day (volts) data
22
127.6 set
23
127.3 9
24
127.4
25
127.5
127.4
9.
127.7
127.5
127.3
127.4
127.5
1
127.3
127.5
127.7
127.6
127.2
127.6
127.6
15
16
17
18
19
20
21
2
127.8
3
127.6
4
10
127.8
128.0
127.2
7
11
12
13
14
127.9
127.7
127.6
Transcribed Image Text:Voltage Measurements From a Home Home Home Home Home Full Day (volts) Day (volts) Day (volts) Day (volts) data 22 127.6 set 23 127.3 9 24 127.4 25 127.5 127.4 9. 127.7 127.5 127.3 127.4 127.5 1 127.3 127.5 127.7 127.6 127.2 127.6 127.6 15 16 17 18 19 20 21 2 127.8 3 127.6 4 10 127.8 128.0 127.2 7 11 12 13 14 127.9 127.7 127.6
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