The Whitcomb Company manufactures a metal ring for industrial engines that usually weighs about 50 ounces. A random samp
Posted: Wed Jul 06, 2022 12:21 pm
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).
(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
- The Whitcomb Company Manufactures A Metal Ring For Industrial Engines That Usually Weighs About 50 Ounces A Random Samp 1 (16.66 KiB) Viewed 13 times
(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