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Unformatted text preview: Name _____________________________________ Assignment (circle, as instructed): Date Due __________________________________ Problems 1 2 3 4 ALL Statistical Decisions Exercise (20 points) Instructions: For each experiment, evaluate the statistical outcomes according to the instructions (5 points each). Experiment 1 An investigator compares the number of cavities of children who have been advised to use either toothpaste A or toothpaste B for a year. At the end of the year, the investigator found that Group A has significantly fewer cavities than Group B (at the .05 level). Answer the following questions using the relationship between the independent and dependent variable in the experiment above as an example. a. What is the null hypothesis (H o )? b. What is the research hypothesis (H 1 )? c. What would be the Type I error? d. What would be the Type II error? e. What is the probability of a Type I error? Statistical Decisions Exercise (continued) Experiment 2 The effect of money incentive on reading comprehension was investigated by giving equal groups either...
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This note was uploaded on 11/16/2011 for the course PSYCH 3600 taught by Professor Whatley during the Fall '11 term at Valdosta State University .
- Fall '11
- Experimental Psychology