409Quiz4Bans - STAT 409 Fall 2009 Name ANSWERS . Version B...

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STAT 409 Fall 2009 Name ANSWERS . Version B Quiz 4 (5 points) Be sure to show all your work, your partial credit might depend on it. No credit will be given without supporting work. 1. At Anytown College, the administration would like the students’ grade distribution to be 25% A’s, 30% B’s, 25% C’s, and 20% D’s. The school’s president thinks that many instructors are grading too leniently, so he takes a random sample of grades to check out his suspicion. A random sample of 25 grades yields 10 A’s, 9 B’s, 4 C’s, and 2 D’s. The president wishes to test
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