Mathematics, 15.04.2020 22:21, tot92
The breaking strengths of cables produced by a certain manufacturer have a mean µ, of 1850 pounds, and a standard deviation of 90 pounds. It is claimed that an improvement in the manufacturing process has increased the mean breaking strength. To evaluate this claim, 21 newly manufactured cables are randomly chosen and tested, and their mean breaking strength is found to be 1893 pounds. Assume that the population is normally distributed. Can we support, at the 0.05 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 20:30, velazquezemmy45
Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?
Answers: 1
Mathematics, 22.06.2019 00:30, Trendymwah4211
Ineed the solution to this problem and the steps.
Answers: 1
The breaking strengths of cables produced by a certain manufacturer have a mean µ, of 1850 pounds, a...
Mathematics, 27.09.2019 19:30
Arts, 27.09.2019 19:30
Computers and Technology, 27.09.2019 19:30
Mathematics, 27.09.2019 19:30
Computers and Technology, 27.09.2019 19:30