) When using midterm exam scores x to predict a student's final grade y in a class, the student would prefer to have a A) negative residual, because that means the student's final grade is lower than we would predict with the model. B) residual equal to zero, because that means the student's final grade is exactly what we would predict with the model. C) positive residual, because that means the student's final grade is higher than we would predict with the model. D) positive residual, because that means the student's final grade is lower than we would predict with the model. E) negative residual, because that means the student's final grade is higher than we would predict with the model. After a hurricane, a disaster area is divided into 200 equal grids. Thirty of the grids are selected and every occupied household in the grid is interviewed to help focus relief efforts. Select the numbers of the first five grids that belong to the cluster sample using the random numbers given below. 16348 76938 90169 51392 55887 71015 09209 79157 A) 16348, 76938, 90169, 51392, 55887 B) 16, 38, 48, 76, 93 C) 163, 169, 15, 92, 97 D) 163, 487,693, 890, 169 E) 890, 169, 539, 255, 887 A simple random sample of size 25 is defined to be A) A sample of size 25 chosen in such a way that every possible group of 25 items in the population has an equal chance to be the sample actually selected. B) A sample of size 25 chosen in such a way that every individual item in the population has a 25 = chance of being selected. C) A sample of size 25 chosen in such a way that every individual item in the population has a nonzero chance of being selected. D) A sample of size 25 chosen in such a way that every individual item in the population has the same chance of being selected. Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. A vending machine will only accept coins weighing between 5.48 g and 5.82 g. What percentage of legal quarters will be rejected? A) 1.62% B) 2.48% C) 1.96% D) 0.0196%