Three statistics books
A bookcase haves three statistics books and 5 biology books. If 2 books are chosen at random, the chance that both are statistics books.
a. 3/28
b. 5/14
c. 10/13
d. 3/13
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You decide to test this claim, and ask random sample of 250 U.S. adults whether they have ever seen extraterrestrial being. Of those surveyed, 8% reply "yes." At a 0.01 level of significance, is there enough evidence to reject the claim?
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