Destiny of Pi Posted October 21, 2017 Report Share Posted October 21, 2017 (edited) Hey guys, I'm getting a bit confused with the question. For part d, I used 24*30 = 720 to get the new expected value and the answer I got for d is 0.765. But e.i askes for E(Y), isn't it just 720? Edited October 22, 2017 by Destiny of Pi Reply Link to post Share on other sites More sharing options...
kw0573 Posted October 22, 2017 Report Share Posted October 22, 2017 d) is probability that at least 700 students leave before 15:30, on any given day e) j. is how many such days in a year. So just 0.765* 200 = 153 school days Reply Link to post Share on other sites More sharing options...
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