Four brands of lightbulbs are being considered for use in the final assembly are

Question

Four brands of lightbulbs are being considered for use in the final assembly area of the Ford F-150 truck plant in Dearborn. Michigan. The director of purchasing asked for samples of 100 from each manufacturer The numbers of acceptable and unacceptable bulbs from each manufacturer are shown below. At the 0.01 significance level, is there a difference in the quality of the bulbs? (Round your answers to 3 decimal places.) H_0: There is no relationship between quality and manufacturer. H_1: There is a relationship. Reject H_0 if X^2 > H_0. There is evidence to indicate that there is a relationship between quality and manufacturer.

Explanation / Answer

X2 = 12.075 DF=3

Reject H0 if X2 > 10.27

Reject H0.There is enough evidence to indicate that there is a relationship

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