At a large Midwestern college, 4 % 4% of the students are Hispanic. A random sample of 20 students from the college is selected. Let X X denote the number of Hispanics among them. The standard deviation of X X is:. a) 0.88. b) 0.8. c) 0.768. d) 0.71

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.