STA9708 Ex2 2019.docx - STA 9708 Fall 2019 Exam 2 Name Q1 The first question tests your understanding of hypothesis testing in the context of the

STA9708 Ex2 2019.docx - STA 9708 Fall 2019 Exam 2 Name Q1...

This preview shows page 1 - 4 out of 10 pages.

STA 9708 Fall 2019 Exam 2 Name________________________________ Q1 . The first question tests your understanding of hypothesis testing in the context of the triangle taste test we discussed in class. In this case, the test consists of 15 identical trials on which the subject (a job applicant) attempts to identify the odd sample on each trial, and H 0 : p = 1/3 and H a : p > 1/3. Assume the 2 rejection regions are: (1) R7= {7, 8, 9, 10, 11, 12, 13, 14, 15} and (2) R9= {9, 10, 11, 12, 13, 14, 15}. 1. What is the p-value for a job applicant who achieves x = 8 correct identifications in n = 15 trials? ____________ (1 point) (a) 0.0152(b) 0.0018(c) 0.0213(d) 0.0308(e) 0.1311(f) 0.0085(g) 0.0970(h) 0.0882 (i) 0.0023 (j) 0.2030 1
Image of page 1
Q2 . A regression equation with 2 independent variables is calibrated on a sample of size of 20. The ANOVA table reports that the regression sum of squares is 128,329 and the residual sum of squares is 151,016. The coefficient on x 1 is -941.9; the standard error is 275.08. For x 2 , the coefficient is -429.06; the standard error is 379.83. 1. What is the p-value for the test of significance of the overall regression equation? ____________ (1 point) 2.What is the p-value for the test of significance of x1? ____________ (1 point) 3. What is the p-value for the test of significance of x 2 ? ____________ (1 point) (i) 0.0024 (j) 0.0202 2
Image of page 2
Q3 . A quality control inspector is always on the lookout for substandard parts and components provided to her manufacturing company by outside suppliers. Because most shipments contain some defective items, each must be subjected to inspection. Naturally, some shipments contain more defectives than others, and it is the job of the inspector to identify the most defective-laden shipments so that they can be returned to the supplier. Suppose the inspector selects a sample of 121 items from a
Image of page 3
Image of page 4

You've reached the end of your free preview.

Want to read all 10 pages?

  • Spring '10
  • SABBAN

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors