a. A student has final examination grades of 95, 80, 75, 78, 86 in history, English, chemistry, calculus and statistics. If the respective credits of the five courses are 3, 3, 4, 4 and 1, what then is the weighted average grade of the student? b. Somebody's invests $1,000 at a rate of 7%, $3,000 at a rate of 7.5% and $16,000 at a rate of 8%. What is the overall percentage yielding in this investment? c. A student has scored 88% in home assignments, 97% in midterm examination and 98% in the final examination of probability and statistics course. If the respective points are 25, 25 and 50, what then is the overall percentage of the student in the course?

a. A student has final examination grades of 95, 80, 75, 78, 86 in history, English, chemistry, calculus and statistics. If the respective credits of the five courses are 3, 3, 4, 4 and 1, what then is the weighted average grade of the student? b. Somebody's invests $1,000 at a rate of 7%, $3,000 at a rate of 7.5% and $16,000 at a rate of 8%. What is the overall percentage yielding in this investment? c. A student has scored 88% in home assignments, 97% in midterm examination and 98% in the final examination of probability and statistics course. If the respective points are 25, 25 and 50, what then is the overall percentage of the student in the course?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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