If jeremy is in the 90th percentile and the mean of his test scores is 180 with a standard deviation of 15, which of the following scores with jeremy most likely get on a standardized test?
a 210
b 180
c 199
d 249

I think the answer is B. 180. This is because the mean of Jeremy's test score is 180 with a standard deviation of 15 which means that his test score is likely to fall within the range of 180 plus or minus 15 or from 165 - 195. Among the choices, only 180 fit in the predicted range. Note, that the standard deviation is a measure of the dispersion of the data in a data set. 

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.