Mathematics, 15.04.2020 04:12, azainababbas
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 14:00, codysaucier2823
Given the conditional statement, match the following. conditional statement: if two lines intersect, then their intersection is one point.
Answers: 1
Mathematics, 21.06.2019 21:00, joshuasanders8862
You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up
Answers: 1
Mathematics, 21.06.2019 23:00, jenhowie2944
Abox holds 500 paperclips. after a week on the teacher's desk 239 paperclips remained. how many paperclips were used?
Answers: 1
The breaking strengths of cables produced by a certain manufacturer have a mean µ, of 1850 pounds, a...
History, 30.08.2019 14:30
English, 30.08.2019 14:30
Mathematics, 30.08.2019 14:30