Hw__10_Solutions_to_POST

# Hw__10_Solutions_to_POST - HOMEWORK#10 Selected Solutions...

• Notes
• 4
• 100% (2) 2 out of 2 people found this document helpful

This preview shows pages 1–3. Sign up to view the full content.

HOMEWORK #10 Selected Solutions P1 1 - α = P[Accept H o | H o true] fabricator claims beams are premium, and found to be true, both engineer and fabricator are happy α = P[Reject H o | H o true] Engineer falsely accuses fabricator of selling non- premium beams β = P[Accept H o | H o false] Engineer unknowingly buys non-premium beams, fabricators gets away with selling non-premium beams 1 - β = P[Reject H o | H o false] Engineer correctly accuses fabricator of selling non-premium beams P2 a) For all 10 samples, P-value > α = 0.1 accept H o for all 10 samples (depend on the data) b) Ho was never rejected, so an ‘incorrect decision’ was never made. (depend on the data) P[reject H o | H o true] = α = 0.1 on average , expect to incorrectly reject H o in 1 out of 10 samples c) P-values are listed in a). They are not all the same. (depend on data, possibly some values happen to be the same by chance)

This preview has intentionally blurred sections. Sign up to view the full version.

d) If α = 0.05 instead of 0.1 is used, no decisions to accept H o are changed, because all the p-values were already all greater than 0.1, the only way to
This is the end of the preview. Sign up to access the rest of the document.
• Fall '08
• Stedinger
• Statistics, Statistical hypothesis testing, Statistical significance, Ho Accept Ho

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern