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A First Course in Probability (10th Edition)
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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A statistics instructor, wishes to test the effect of two different text books on the percentage of students in class that earn a grade of B or better. During the fall of 1994, he teaches two sections of Statistics where in each section he uses a different text. Two sections classes are I and II. In class I, students strength 75 and 45 students are earned grade B or better. In class II, students strength 105 and 58 students are earned grade B or better. Test at 5% level of significant percentage difference between the performance of students in the two statistics classes.
Transcribed Image Text:A statistics instructor, wishes to test the effect of two different text books on the percentage of students in class that earn a grade of B or better. During the fall of 1994, he teaches two sections of Statistics where in each section he uses a different text. Two sections classes are I and II. In class I, students strength 75 and 45 students are earned grade B or better. In class II, students strength 105 and 58 students are earned grade B or better. Test at 5% level of significant percentage difference between the performance of students in the two statistics classes.
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