In a test of the effectiveness of garlic for lowering cholesterol, subjects were treated with raw garlic. Cholesterol levelswere measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (inmg/dL) have a mean of and a standard deviation of . Use a significance level to test the claim that with garlictreatment, the mean change in LDL cholesterol is greater than . What do the results suggest about the effectiveness of thegarlic treatment

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

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.

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?