Question
Four brands of light bulbs are being considered for use in the final assembly area of the Saturn plant in Spring Hill, Tennessee.The director of
Four brands of light bulbs are being considered for use in the final assembly area of the Saturn plant in Spring Hill, Tennessee.The director of purchasing asked for samples of 100 from each manufacturer.The numbers of acceptable and the unacceptable bulbs from each manufacturer are shown below.At the .05 significance level, is there a difference in the quality of the bulbs?
Manufacturer
ABCD
Unacceptable 1285 11
Acceptable 88 92 95 89
Total100100100100
A.What is the Chi square obtained?
B.What is the critical value?
C.Do we reject the null?
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Essentials of Business Analytics
Authors: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
2nd edition
1305627733, 978-1305861817, 1305861817, 978-0357688960, 978-1305627734
