3. In 2009 at the height of "Potter-mania" it was found that 67% of the United States population owned at least a single book from the Harry Potter series. I think that my students are different than the national average for Harry Potter book ownership. I take a random sample of 80 students and find that 50 own at least a single Harry Potter Book. If I want a 3.5% chance of committing a type one error, test my claim. l:0H () (b) Find the critical value(s) H (c) Find the test value (d) Acent or reiect H.

3. In 2009 at the height of "Potter-mania" it was found that 67% of the United States population owned at least a single book from the Harry Potter series. I think that my students are different than the national average for Harry Potter book ownership. I take a random sample of 80 students and find that 50 own at least a single Harry Potter Book. If I want a 3.5% chance of committing a type one error, test my claim. l:0H () (b) Find the critical value(s) H (c) Find the test value (d) Acent or reiect H.

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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We ask if visual memory ability for a sample of 25 art major (x=49) is better than that of engineers who, on a nationwide test, scored µ=45 and ox=14. Higher scores indicate a bettermemory. а. Is this a one- or two-tailed test? b. What are H, and H.? с. Perform the z-test.