The Whitcomb Company manufactures a metal ring for industrialengines that usually weighs about 50 ounces. A random sample of 50of these metal rings produced the following weights (inounces).
The Whitcomb Company Manufactures A Metal Ring For Industrial Engines That Usually Weighs About 50 Ounces A Random Samp 1 (16.66 KiB) Viewed 12 times
(a) Construct a 99% confidence interval for the average weightof the metal rings made by Whitcomb company.
(b) Test at 1% significance level to determine if the metalrings made by Whitcomb Company have an average weight less than 50ounces.
51 53 56 50 44 47 53 53 42 57 46 55 41 44 52 56 50 57 44 46 41 52 69 53 57 51 54 63 42 47 47 52 53 46 36 58 51 38 49 50 62 39 44 55 43 52 43 42 57 49
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!