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Unformatted text preview: ber of successes in the sample is often given, in which case, the formulas are unnecessary. © 2011 THE CARNEGIE FOUNDATION FOR THE ADVANCEMENT OF TEACHING A PATHWAY THROUGH STATISTICS, VERSION 1.6, STATWAY™
STUDENT HANDOUT STATWAY STUDENT HANDOUT  2 Lesson 8.1.1 Intervals for a Population Proportion and the Normal Distribution For the remainder of problems in this lesson, we will find confidence intervals based solely on sample statistics. TRY THESE A science fiction website claims that the proportion of college students who believe that extra
terrestrials have visited earth is equal to 0.06. Suppose you wish to investigate this claim by doing your own study of a randomly selected sample of college students. You find that in a random sample of 250 college students, 45 believe that extra
terrestrials have visited earth. 1 Find the sample proportion. ! = 2 Are the criteria for approximate normality sat...
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This document was uploaded on 03/13/2014 for the course MATH 75 at Skyline College.
 Spring '14

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