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Ecology: Shark Attacks In Hawaii shark attacks are very rare. Furthermore, about 55%
of all shark attacks are serious but not fatal (Reference: Sharks of Hawaii. Dr. Leighton
Taylor. University of Hawaii Press). You are scheduled to give a talk at a local scuba
club in Honolulu and want to include a brief statistical profile regarding the most
recent 6 shark attacks, all of which were nonfatal. Let r be the number of nonfatal
attacks out of a random sample of 6 shark attacks.
(a) Make a histogram for the
(b) What is the probability all six shark attacks are nonfatal?
(c) What is the probability that 3 or more of the six shark attacks are nonfatal?
(d) What is the expected number of nonfatal shark attacks out of the six? What is the
standard deviation of the r-probability distribution?
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