Unformatted text preview: An estimate of the average difference in their performances under the two conditions is then calculated. 3 A scientist wants to determine if pleasant odors have an effect on students’ performance on tests. To examine this theory, 30 subjects were split into two groups. Subjects in both groups worked paperandpencil mazes while wearing a mask. The mask was unscented for one group and scented for the other. The means for the groups were compared, and an estimate for the difference of the population means was calculated. 4 A scientist wants to determine if type of odor and type of music played have an effect on students’ test scores. Three odors (good, bad, and none) and three types of music (classical, jazz, and rock) are used in the study. 5 Does the average income for Montana residents exceed $20,000? Assume the population standard deviation is $5,000. Lecture 11B Type of procedure exercises Page 1...
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 Spring '11
 HOWELL
 Statistics, Normal Distribution, Mean, E. Oneway ANOVA

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