STA2014-2 STA 2014-2 Individual Week 10

Assignment Instructions

To complete this assignment:

1. Answer all of the questions below in the space provided.

2. Reflect on the information presented in this week’s lesson and provide an insightful response to each question.

Save and Submit to Dropbox

1. Save your work as a Microsoft Word 2010 (.docx) file that includes your name, course code, and title in the file name. For example: JaneSmith_STA2014_Week10.docx.

2. To submit your assignment, go to the Dropbox and click "Submit Assignment."

3. Click on the drop-down menu to select the Week 10: Individual Work basket in the Dropbox

Section 9.1

22. You Explain It! Superstition: A USA Today/Gallup poll asked 1,006 adult Americans how much it would bother them to stay in a room on the 13th floor of a hotel. Interestingly, 13% said it would bother them. The margin of error was 3 percentage points with 95% confidence. Which of the following represents a reasonable interpretation of the survey results? For those not reasonable,  explain the flaw.

Section 9.2

8. (a)  Find the t-value such that the area in the right tail is 0.02 with 19 degrees of freedom.

Section 9.3

7. Aggravated Assault: In  a  random  sample  of  40  felons convicted of aggravated assault, it was determined that the mean length of sentencing was 54 months, with a standard deviation of 8 months. Construct and interpret a 95% confidence interval for the mean length of sentence for an aggravated assault conviction. Source:  Based  on  data  from  the  U.S.  Department  of Justice.