MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Pryme Tyme Soda Werks would like to dominate the college energy drink market.  They’ve taken their leading energy drink, Shoker, and added a proprietary blend of nootropic supplements (i.e., vitamins and minerals that are supposed to increase cognitive processing, such as choline and gingko biloba).   Their big marketing angle is that Roket Phule not only increases your energy, but makes you smarter too!  We know that the population parameters for IQ is (μ = 100, σ = 15).  You randomly select 40 students and give them all the Roket Phule they can drink for a month.  At the end of that time, you give them an IQ Test and find a mean IQ .

 

  1. Is this a one-tailed or 2-tailed test? How do you know?
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