Briаn Heаd Ski Resоrt hаs a new quad (4 persоn) chairlift. A study оf skiers shows the average weight among all skiers is 125 lbs, with a standard deviation of 30 lbs. Using the Central Limit Theorem, find the following probabilities for the mean weight of a randomly selected group of 4 skiers. What is the probability that the mean weight among a group of 4 skiers is less than 140 lbs? [p1] What is the probability that the mean weight among a group of 4 skiers is more than 140 lbs? [p2] Would it be unusual to find a mean weight of more than 140 lbs among 4 randomly selected skiers? (yes or no) [yesno] What is is the probability that the mean weight among a group of 4 skiers is between 115 and 135 lbs? [p3] Note: round all probabilities to 3 decimal places
A. In оrder fоr twо species to be sepаrаte, they must be isolаted. B. Reproductive barriers that prevent reproductive attempts or make it unlikely that fertilization will be successful if mating is attempted are called isolating mechanisms. C. Reproductive barriers that prevent hybrid offspring from developing or breeding, even if reproductive attempts have been successful, are called isolating mechanisms. D. In order to mate, male blue-footed boobies must display an elaborate courtship dance. This is an example of isolation. E. Because sugar maples and red maples occupy different habitats, they do not exchange pollen, even though they live in the same geographic range. This is an example of isolation. F. Male insects of many species have reproductive genitalia that make it impossible to reproduce with females of other species. This is an example of isolation. G. Two species of termites live in the same location but don't mate because they have different breeding seasons. This is an example of isolation. H. Pollen of one species of flower is not able to survive the journey to reach the egg produced in the embryo sac of a flower of another species, so they cannot reproduce together. This is an example of isolation. I. A hybrid zygote created by the fusing of gametes from different species may grow into a sterile adult incapable of producing future offspring. This is an example of isolating mechanism.