THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A brand manager is interested in determining if consumers prefer the new fragrance associated with a detergent.She surveyed 212 consumers and has them rank the new and old fragrances on a scale of 1 to 10.Of the 198 consumers who scored a different score on the new fragrance than on the old,the absolute values of the differences in their ratings were ranked.The smaller of the ranked sums,8,208,was for those individuals who rated the original fragrance higher.
-Production records indicate that in the normal operation for a certain brand of computer hard drive,95% have no faults,3% have one fault,and 2% have more than one fault.For a random sample of 400 of these hard drives from a week's output,375 were found to have no faults,15 to have one fault,and 10 to have more than one fault.Test at the 5% level the null hypothesis that the quality of the output from this week conforms to the usual pattern.