What is the probability that a student selected at random is a boy? P( Answer
B
)= Answer

What is the probability that a boy selected at random is a Junior?
P( Answer
J | B
)= Answer

What is the probability of randomly choosing a student who is a Junior and a boy?
P(J Answer
∩
B)= Answer

What is the probability of randomly choosing a student who is a girl given that she is not junior?
P( Answer
G | J '
)= Answer

What is the probability of randomly selecting a girl?
P(G)= Answer

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Is the power produced directly proportional to the wind speed, give reasons for your answer?

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.