A statistics professor has observed that about 13% of the students who initially enroll in his Introductory Stats class withdraw before the end of the semester. A salesman suggests that he try a statistics software package that gets students more involved with computers, predicting it will cut the dropout rate. The software is expensive so the salesman offers to let the professor use it for a semester to see if the dropout rate goes down significantly. a) Is this a one-tailed or two-tailed test? b) Write the null and alternative hypotheses. c) In this context, what does it mean that the professor makes a Type I error? d) In this context, what does it mean that the professor makes a Type II error?
A statistics professor has observed that about 13% of the students who initially enroll in his Introductory Stats class withdraw before the end of the semester. A salesman suggests that he try a statistics software package that gets students more involved with computers, predicting it will cut the dropout rate. The software is expensive so the salesman offers to let the professor use it for a semester to see if the dropout rate goes down significantly. a) Is this a one-tailed or two-tailed test? b) Write the null and alternative hypotheses. c) In this context, what does it mean that the professor makes a Type I error? d) In this context, what does it mean that the professor makes a Type II error?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A statistics professor has observed that about 13% of the students who initially enroll in his Introductory Stats class withdraw before the end of the semester. A salesman suggests that he try a statistics software package that gets students more involved with computers, predicting it will cut the dropout rate. The software is expensive so the salesman offers to let the professor use it for a semester to see if the dropout rate goes down significantly. a) Is this a one-tailed or two-tailed test? b) Write the null and alternative hypotheses. c) In this context, what does it mean that the professor makes a Type I error? d) In this context, what does it mean that the professor makes a Type II error?
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