Question: Suppose that a psychologist examined learning performance under three temperature conditions: 50 degrees, 70 degrees, and 90 degrees. Three samples of subjects were selected, one sample for each treatment condition. A test of general achievement was administered and the data is presented below:

50-deg 70-deg 90-deg
63 81 61
81 71 58
79 85 62
70 90 61
51 74 68
64 87 46

Write a null and alternative hypothesis in symbols AND in words within the context of this example. 2. Show by hand a one-way ANOVA for a = .05 (show all calculations and use the appropriate symbol notation for the sample sizes, group means, and variances as presented in the practice problem) and construct the ANOVA summary table (show the calculations for the MSbg and MSwg). Round (or don't round) it doesn't matter. 3. Make a decision about the null hypothesis, provide statistical evidence for your decision, and make a final conclusion within the context of this example.