Answer
Difference in population means ($(µ_{1} - µ_{2})$) of students getting A grade and B&C grade is the parameter of interest
Work Step by Step
As above
Statistics (12th Edition)
by McClave, James T.; Sincich, Terry T.
Published by
Pearson
ISBN 10:
0321755936
ISBN 13:
978-0-32175-593-3
Chapter 9 - Inferences Based on Two Samples - Exercises 9.1 - 9.29 - Applying the Concepts - Basic - Page 424: 9.17a
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