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Unformatted text preview: rel. freq (80-<90) + rel. freq (90-<1000) =
0.32 + 0.14 + 0.04 +0.04 = 0.54
(0.5 pts.) #2: In exercise 14 (p.22), what is the shape of the histogram? (number of peaks
and symmetric/positively skewed/negatively skewed) unimodal (one peak), positively skewed 2 (2 pts.) 1.20 (p. 31). Suppose that the reaction temperature x (oC) in a certain chemical
process has a uniform distribution with a = -5 and b = 5. a) In the long run, what proportion of these reactions will have a negative value of
temperature? b) In the long run, what proportion of temperatures will be between -2 and 2? Between -2 and 3? c) For any number k satisfying -5 < k < k + 4 < 5, what long-run proportion of
temperatures will be between k and k + 4? (3.5 pts.) 1.22 (p.31). If x denotes the total waiting time on any particular day, the density
function of x can be shown to be a) Draw the density curve, and v...
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This note was uploaded on 01/29/2014 for the course STAT 350 taught by Professor Staff during the Fall '08 term at Purdue University.
- Fall '08