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A sample of midterm grades for five students showed the following results: 72, 65, 82, 90, 76. Which of the following statements are correct, and which should be challenged as being too generalized? a. The average midterm grade for the sample of five students is 77. b. The average midterm grade for all students who took the exam is 77. c. An estimate of the average midterm grade for all students who took the exam is 77. d. More than half of the students who take this exam will score between 70 and 85. e. If five other students are included in the sample, their grades will be between 65 and 90.

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Statistics for Business & Economic...

12th Edition
David R. Anderson + 4 others
Publisher: South-Western College Pub
ISBN: 9781285846323
BuyFind

Statistics for Business & Economic...

12th Edition
David R. Anderson + 4 others
Publisher: South-Western College Pub
ISBN: 9781285846323

Solutions

Chapter
Section
Chapter 1, Problem 24SE
Textbook Problem

A sample of midterm grades for five students showed the following results: 72, 65, 82, 90, 76. Which of the following statements are correct, and which should be challenged as being too generalized?

  1. a. The average midterm grade for the sample of five students is 77.
  2. b. The average midterm grade for all students who took the exam is 77.
  3. c. An estimate of the average midterm grade for all students who took the exam is 77.
  4. d. More than half of the students who take this exam will score between 70 and 85.
  5. e. If five other students are included in the sample, their grades will be between 65 and 90.

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