A purchasing agent obtained 60 watt bulbs from two companies. He has the samples tested in his laboratory for the length of the life with the following results: Length of Life (in hours) 1700 and under 1900 1900 and under 2100 2100 and under 2300 2300 and under 2500 2500 and under 2700 Соmpany A Соmpany B 12 14 30 20 17 8 6 2 a. Which Company's bulb do you think are better in terms of average life? b. If price of both types are the same, which company's bulbs would you buy and why? ( Coefficient of variation is Mean /Standard deviation *100)

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A purchasing agent obtained 60 watt bulbs from two companies. He has the samples
tested in his laboratory for the length of the life with the following results:
Length of Life (in hours)
1700 and under 1900
1900 and under 2100
2100 and under 2300
2300 and under 2500
2500 and under 2700
Соmpany A
Соmpany B
12
3
14
30
20
17
8
6
2
a. Which Company's bulb do you think are better in terms of average life?
b. If price of both types are the same, which company's bulbs would you buy and
why? ( Coefficient of variation is Mean /Standard deviation **100)
Transcribed Image Text:A purchasing agent obtained 60 watt bulbs from two companies. He has the samples tested in his laboratory for the length of the life with the following results: Length of Life (in hours) 1700 and under 1900 1900 and under 2100 2100 and under 2300 2300 and under 2500 2500 and under 2700 Соmpany A Соmpany B 12 3 14 30 20 17 8 6 2 a. Which Company's bulb do you think are better in terms of average life? b. If price of both types are the same, which company's bulbs would you buy and why? ( Coefficient of variation is Mean /Standard deviation **100)
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