You ride the train to school each day. If the probability that you arrive before the train is scheduled to leave arrive is 80% and the train is on time 75% of the time and the probability that both you and the train are on time is 60% what to do know about the two events. A you are on time for the train and B the train is on time? a. Events A and B are NOT independent because they can happen at the same time
b. Events A and B are independent because they have different probabilities
c. Events A and B are NOT independent because the probability of them both happening is 60% which is the product of their probabilities.
d. Events A and B are independent because the probability of them both happening is 60% which is the product of their two probabilities

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

Which will form a composite function?

Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type of​ sampling? who would be excluded from the survey and how might this affect the results of the​ survey? what is the frame for this type of​ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of the​ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.