Question

Sec 6.4 (5 pts each): In each of these, to demonstrate your analysis of the problem, draw a
diagram as I do in the videos.

2) Here are the population parameters for the bear weights: ? = 207.6 ??? ? = 96.6 ???
In the habitat of our bears is a very deep and steep canyon that is spanned by a single log of
length 6 feet and width of 2 feet. The bears can use the log to transverse the canyon. The
load limit of the log (unknown to the bears) is 280 pounds.
a) Find the probability that a single randomly selected bear weighs more than 280 pounds.
b) Find the probability that a random sample of 8 bears has a mean weight greater than
280 pounds. Also, what assumption(s) are you making that insures your answer to this
problem has validity.
c) Which of the results, part (a) or part (b) should concern the bears that cross the log? Why?

Answer 1