1. A group of 100 mice is injected with a memory inducing chemical and taught to run a maze. The group runs the maze in an average of 265 seconds with a standard deviation of 32 seconds. The population of mice can run the maze in 270 seconds. Is there a difference between the injected mice and the rest of the population. Conduct a hypothesis testing using all four steps of the hypothesis testing procedure as we learned in this class (including using the tables from this class). Use an alpha level of 0.05.

2.Based on problem #1, calculate a 99% confidence interval. (Remember that the critical value might be different than it was for the hypothesis test.) Based on that interval, what do you conclude about the difference between the population mean and the sample mean?

\fTABLE B-3. The F Distributions . . .... Within- Between-Groups Degrees of Freedom Groups Significance (p) Level 1 2 3 4 5 6 0.01 4052 5000 5404 5625 5764 5859 0.05 162 200 216 225 230 234 0.10 39.9 49.5 53.6 55.8 57.2 58.2 2 0.01 98.50 99.00 99.17 99.25 99.30 99.33 0.05 18.51 19.00 19.17 19.25 19.30 19.33 0.10 8.53 9.00 9.16 9.24 9.29 9.33 3 0.01 34.12 30.82 29.46 28.71 28.24 27.91 0.05 10.13 9.55 9.28 9.12 9.01 8.94 0.10 5.54 5.46 5.39 5.34 5.31 5.28