Statistics Homework Solutions 148

Statistics Homework Solutions 148 - 148 CHAPTER 6 6 082 the...

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148 CHAPTER 6 t 0 58 0 0 233581 6 6 082. Since the alternate hypothesis is of the form μ D , the P -value is the sum of the areas to the right of t 6 082 and to the left of t 6 082. From the t table, 0 001 P 0 002. A computer package gives P 0 00174. We can conclude that there is a difference in concentration between the shoot and the root. 11. (a) The differences are 5 0 4 6 1 9 2 6 4 4 3 2 3 2 2 8 1 6 2 8. Let μ R be the mean number of miles per gallon for taxis using radial tires, and let μ B be the mean number of miles per gallon for taxis using bias tires. The appropriate null and alternate hypotheses are H 0 : μ R μ B 0 versus H 1 : μ R μ B 0. D 3 21 s D 1 1338, n 10. There are 10 1 9 degrees of freedom. t 3 21 0 1 1338 10 8 953. Since the alternate hypothesis is of the form μ D , the P -value is the area to the right of t 8 953. From the t table, P 0 0050. A computer package gives
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