In the state of North Carolina, the mean SAT Math score is 535 with a standard deviation of 95 points. Savannah, who lives in North Carolina, just received her SAT results and she was in the 93rd percentile for the math portion of
the SAT. What was her score, assuming SAT Math scores are approximately Normally distributed? Use a graphing
calculator to find the answer.
550
O 585
O 615
640
675

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.