We often deal with weighted means, in which different data values carry different weights in the calculation of the mean. For example, if the final exam counts for 50% of your final grade and 2 midterms each count for 25%, then you must assign weights of 50% and 25% to the final and midterms, respectively, before computing the mean score for the term. Apply the idea of weighted mean in the following exercise. A student has completed 16 credits in the table to the right during one semester. Grades are weighted so that Aequals4.0; Upper A minusequals3.7; Upper B plusequals3.4; Upper B equals 3.0; Upper B minusequals2.7; Upper C plusequals2.4 and Upper Cequals2.0. Answer parts a and b below. Course Credits Grade Statistics 4 Upper A minus Eastern Religions 4 Upper A French 3 Upper B minus Geology 4 Upper B Geology Lab 1 Upper C Question content area bottom Part 1 a. Find the student's GPA for the semester. The student's GPA is 3.31. (Type an integer or decimal rounded to the nearest hundredth as needed.) Part 2 b. What grade would the student need to earn in French to raise her GPA over 3.45? To earn a GPA over 3.45, the student would need to earn a minimum grade of B. A. Upper B plus . Upper A minus