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MGTOP 215 Chapter 9 problems

by: Megan Lester

MGTOP 215 Chapter 9 problems MGTOP 215

Marketplace > Washington State University > MGTOP 215 > MGTOP 215 Chapter 9 problems
Megan Lester
GPA 2.8

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About this Document

Chapter 9 problems from book
Business Statistics
Sung Ahn
Class Notes
25 ?




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This 2 page Class Notes was uploaded by Megan Lester on Wednesday September 28, 2016. The Class Notes belongs to MGTOP 215 at Washington State University taught by Sung Ahn in Fall 2015. Since its upload, it has received 2 views.


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Date Created: 09/28/16
HC HW Due April 15 th HC: 9.10, 9.16, 9.32, 9.51, 9.56 Use Excel/PHStat2 on all For the ???? : the defendant would be guilty 0 For the ???? 1 the defendant would be innocent Type I error would then be not convicting the guilty person Type II error would then be convicting an innocent person a.) ???? ????ould be rejected because ???? ????????????????= −2.00 < −1.96 b.) ???? − ???????????????????? = 0.0456 c.) 7005 ≤ ???? ≤ 7495 d.) They would be the same a.) You would reject ???? b????cause ???? ???????????????? = −5.9355 < −2.0106 b.) You can assume the distrubution would be normal c.) The t test is not really affected by the large sample size but it dose let you use the t distribution . a.) You would reject ????????because ???? ????????????????= −2.7778 < 1.9842 b.) ???? − ???????????????????? = 0.0065 > 0.05 so the prob. that you’ll get ????????????????????is less than -2.7778 when given that the null hypothesis is right c.) The prob. of getting a mean of 3.25 min per costumer out of 100 costumers is 0.05 d.) They are different a.) ???????????????????? = 1.1685 ???? − ???????????????????? = 0.1213 You wouldn’t reject ???????? ????????????????????= 1.1685 < 1.645 b.) ???????????????????? = 2.337 ???? − ???????????????????? = 97 You would reject ???????? ????????????????????= 2.337 < 1.645 c.) The same size has an effect on whether you reject the null hypothesis or not d.) With an n=20 you probably wouldn’t reject the null hypothesis.


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