Mathematics, 03.11.2020 23:00 domie5910
The breaking strengths of cables produced by a certain manufacturer have a mean µ, of 1900 pounds, and a standard deviation of 70 pounds. It is claimed that an improvement in the manufacturing process has increased the mean breaking strength. To evaluate this claim, 22 newly manufactured cables are randomly chosen and tested, and their mean breaking strength is found to be 1911 pounds. Assume that the population is normally distributed. Can we support, at the 0.01 level of significance, the claim that the mean breaking strength has increased? (Assume that the standard deviation has not changed). Carry your intermediate computations to at least three decimal places.
Answers: 2
Mathematics, 21.06.2019 14:00, versaceblooper
Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?
Answers: 1
Mathematics, 21.06.2019 18:30, nativebabydoll35
How do you solving the solution of each system using elimination?
Answers: 2
Mathematics, 21.06.2019 20:30, elijah4723
1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?
Answers: 1
The breaking strengths of cables produced by a certain manufacturer have a mean µ, of 1900 pounds, a...
Mathematics, 07.04.2021 19:10
Mathematics, 07.04.2021 19:10
Computers and Technology, 07.04.2021 19:10
World Languages, 07.04.2021 19:10
History, 07.04.2021 19:10
Mathematics, 07.04.2021 19:10