1.) Some students are trying to calculate P( p

Page matenc 1.) Some students are trying to calculate P(p < 0.5) . Other information in the problem indicated that p = 0.6and n = 64 . Explain what mistake each student made, then calculate the actual correct answer. a.) Lin said that since p can only be between 0 and 1, and since 0.5 is in the exact middle, the probability should be 0.5. b.) Scott said that we need to look 0.5 up on the normal table, and after doing that, he found the probability to be 0.6915. c.) Talia said that she needed to convert to z-values first, and she did this by calculating ZOOM .5-.6 64(.6)(.4) -.1 3.919 8 -.1 = 0.20 . She then found her probability on .4899 the normal table and got 0.4207. d.) Jerome agreed that he should first convert to a z-value, and he did this by calculating -.1 .0612 8 -.1 = 13.06 . He then found said this was so .00765 64 64 far off the table, the probability must be close to 0. The actual correct answer should be the following.