Answered: Pew research asked random sample of…

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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Question

Pew research asked random sample of 1000 US adults whether they supported increased usage of coal to produce energy. They found that 37% did support increase usage of coal. In this example of a two-sided test for significance, so the hypotheses are: H0: π = 0.5 Ha: π ≠ 0.5 In this problem, you will explore what changes if we use π < 0.5 or π > 0.5 as our alternative hypothesis instead. A. Produce a sampling distribution sketch, shade the area corresponding to the p value if the alternative hypothesis is π ≠ 0.5, and find the p value. B. In the second sampling distribution sketch, shade the area corresponding to the p value if the alternative hypothesis is π < 0.5, and find the p value. C. In the third sampling distribution sketch, shade the area corresponding to the p value if the alternative hypothesis is π > 0.5, and find the p value. NB: The attached image is the original sampling distribution sketch, with the test statistics