\fQuestion 20 2 Points A newly-hired school registrar in a Science High School would like to determine the overall performance of students in their Social Studies class. Records reveal that the population means grade is 90 with a standard deviation of 15. Assuming that grades are normally distributed, he randomly selected 18 students and asked them about their Social Studies grades. What is the probability that the Social Studies grades of the students in the sample are between 85 and 92? Express your answer in decimal form, rounded off into four decimal places. 0.6330 Blank 1 0.6330