Last year, two groups of students (blended and evening) sat for the same GBS 541 exam. The marks in the blended group of 64 students had an average of 52 and a standard deviation of 9. The marks in the evening group of 42 students had an average of 45 and a standard deviation of 8. Calculate the average and standard deviation of the combined set of 106 students.

Last year, two groups of students (blended and evening) sat for the same GBS 541 exam. The marks in the blended group of 64 students had an average of 52 and a standard deviation of 9. The marks in the evening group of 42 students had an average of 45 and a standard deviation of 8. Calculate the average and standard deviation of the combined set of 106 students.

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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