2. A manufacturer produces paper that has a mean length of 11 inches and a standard deviation of 0.02 in. Twenty papers

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2 A Manufacturer Produces Paper That Has A Mean Length Of 11 Inches And A Standard Deviation Of 0 02 In Twenty Papers 1 (44.3 KiB) Viewed 90 times

2. A manufacturer produces paper that has a mean length of 11 inches and a standard deviation of 0.02 in. Twenty papers are sampled and measured with a mean paper length of 10.98 in. a. What is the best point estimate for the true mean length of the paper? b. What is the standard error of this point estimate? c. What is the margin of error of this point estimate @ 90% confidence interval? d. Construct a 90% confidence interval for the true mean length of the paper produced by this company. Interpret. e. Based on the 90% confidence interval in d., is there something wrong with the production process changing the length of the paper?