1 n 16 2 mean 8.96 8.9625 3 stdev 0.38 0.3757 4 p(ѵ ≤ 8.5) = 0.11 0.1092 5 p(ѵ ≥ 10.0) 0.0029 0.0029 6 p(ѵ ≤ )=0.20 8.65 8.6463 7 stand error 0.09 0.0939 8 tc 2.13 2.1314 9 E 0.2 0.2002 10 p( 8.76 9.16 ) = 0.95 p( 8.7623 ≤ µ ≤ 9.1627 ) = 0.95 11 inc 8.73? no 8.73 is NOT a possible pop mean for the given data 12 faster Homework 10.2 due 09 April 2010: Write the null hypothesis Write the alternate hypothesis Use alpha of 0.05 Calculate tc Calculate t-statistic t Do you “reject the null hypothesis” OR “fail to reject the null hypotheis”? Dist Speed Speed Speed (kph) 10.3 8.8 8.25
8.2
8.5
8.7
8.7
8.7
8.8
8.8
8.9
9
9.1
9.1
9.2
9.3
9.3
9.4
9.7
10.3 8.77 8.52 10.4 9.19 8.67 10.4 9.68 8.68 10.4 8.89 8.7 10.4 9 8.77 10.5 8.68 8.8 10.6 9.44 8.89 10.9 8.67 9 11.5 8.25 9.09 11.5 8.7 9.1 11.5 9.1 9.19 11.5 9.3 9.27 11.5 9.27 9.3 12.8 9.09 9.44 13 8.52 9.68 March 2009 skew 0.08 -0.04 Dist Speed kurt -0.15 0.1 10.44 8.44 mode 8.7 11.5 8.82 median 8.95 8.95 12.69 8.67 mean 9.04 9.05 13.48 9.24 stdev 0.37 0.38 16.7 8.46 8.67 mean: 8.73 9.8 min 8.25 8.2 max 9.68 9.7 range 1.43 1.5 classes 5 5 width 0.29 0.3 cul cul f f rnd 8.53 8.5 2 2 8.82 8.8 5 5 9.11 9.1 4 4 9.39 9.4 3 4 9.68 9.7 2 1 16 16