Can you please show work for critical value

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Can you please show work for critical value, I’m having trouble. Thank you!
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.
(a) Ho
(b) Find the critical value(s)
(c) Find the test value
(d) Accept or reject Ho
Transcribed Image Text: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. (a) Ho (b) Find the critical value(s) (c) Find the test value (d) Accept or reject Ho
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