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In: Math

Question 1: Refer to accompanying data set and use the 25 home voltage measurements to construct...

Question 1: Refer to accompanying data set and use the 25 home voltage measurements to construct a frequency distribution with five classes. Begin with a lower class limit of 121.7 volts, and use a class width of 0.2 volt. Does the result appear to have a normal distribution? Why or why not?

Voltage Measurements from a Home   

Day Home (volts) Day Home (volts) Day Home (volts) Day Home (volts)
1 121.9 8 121.9 14 122.3 20 122.6
2 122.4 9 122.2 15 122.3 21 122.3
3 122.2 10 122.4 16 122.3 22 122.2
4 122.3 11 122.2 17 121.8 23 121.9
6 122.6 12 122.1 18 122.0 24 121.9
7 122.2 13 122.2 19 122.1 25 122.2

Complete the frequency distribution below.

Answer: Fill in the blanks in voltage and frequency section.

Voltage (volts) Frequency
121.7-
__-__
__-__
__-__
__-__

Question 2: The data represents the daily rainfall (in inches) for one month. Construct a frequency distribution beginning with a lower level class limit of 0.00 and use a class width of 0.20. Does the frequency distribution appear to be roughly a normal distribution

0.47 0 0 0.23 0 0.46
0 0.22 0 0 1.37 0
0.13 0 0.01 0 0.22 0
0.19 0.88 0 0.01 0 0.26
0 0.22 0 0 0.11 0

Answer: Solve answer for frequency

Daily Rainfall (in inches) Frequency
0.00-0.19
0.20-0.39
0.40-0.59
0.60-0.79
0.80-0.99
1.00-1.19
1.20-1.39

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