Assume that both populations are normally distributed. (a) Test whether mu 1 not equals mu 2 at the alpha equals 0.01 level of significance for the given sample data. (b) Construct a 99% confidence interval about mu 1 minus mu 2. Population 1 Population 2 n 10 10 x overbar 13.2 11 s 3.7 3.9 (a) Test whether mu 1 not equals mu 2 at the alpha equals 0.01 level of significance for the given sample data. Determine the null and alternative hypothesis for this test.

Data for the height of a model rocket launch in the air over time are shown in the table. darryl predicted that the height of the rocket at 8 seconds would be about 93 meters. did darryl make a good prediction? yes, the data are best modeled by a quadratic function. the value of the function at 8 seconds is about 93 meters. yes, the data are best modeled by a linear function. the first differences are constant, so about 93 meters at 8 seconds is reasonable. no, the data are exponential. a better prediction is 150 meters. no, the data are best modeled by a cubic function. a better prediction is 100 meters.