In low-speed crash tests of five cars, the repair costs were computed for a factory authorized repair and an independent repair workshop. The results are listed in Table 2. Is there sufficient evidence to support the claim that the independent workshop has lower repair costs? Use a 0.01 significance level. Table 2 car 1

In low-speed crash tests of five cars, the repair costs were computed for a factory authorized repair and an independent repair workshop. The results are listed in Table 2. Is there sufficient evidence to support the claim that the independent workshop has lower repair costs? Use a 0.01 significance level. Table 2 car 1

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 14PPS

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Question

In low-speed crash tests of five cars, the repair costs were computed for a factory authorized
repair and an independent repair workshop. The results are listed in Table 2. Is there sufficient
evidence to support the claim that the independent workshop has lower repair costs? Use a 0.01
significance level.
Table 2

car	1	2	3	4	5
authorized repair centre X₁	RM797	RM571	RM904	RM1147	RM418
independent workshop X₂	RM523	RM488	RM875	RM911	RM297
D=X_{1 -}X₂	274	83	29	236	121
D₂ = (X₁ -X2)²	75076	6889	841	55696	14641

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