wo brands of tyres are tested with the following results: Life (in ‘000 miles) Number of Tyres of brand X Y 20-25 1 0 25-30 22 24 30-35 64 76 35-40 10 0 40-45 3 0 a) Which brand of tyres have greater average life? b) Compare the coefficient of variation and state which brand of tyres would you use on your fleet of trucks?

wo brands of tyres are tested with the following results: Life (in ‘000 miles) Number of Tyres of brand X Y 20-25 1 0 25-30 22 24 30-35 64 76 35-40 10 0 40-45 3 0 a) Which brand of tyres have greater average life? b) Compare the coefficient of variation and state which brand of tyres would you use on your fleet of trucks?

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter7: Applying Fractions

Section7.2: Proportions

Problem 47WE

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Question

Two brands of tyres are tested with the following results:
Life (in ‘000 miles) Number of Tyres of brand
X Y
20-25 1 0
25-30 22 24
30-35 64 76
35-40 10 0
40-45 3 0
a) Which brand of tyres have greater average life?
b) Compare the coefficient of variation and state which brand of tyres would you use on your fleet
of trucks?

Expert Solution