STA 2014 Week 10 Individual Work Solution Correct Answers
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STA 2014 Week 10 Individual Work Solution Correct Answers Statistics STA 2014 Week 10 Individual Work 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. Objective: Use confidence intervals appropriately . 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 fl oor of a hotel. Interestingly, 13% said it would bother them. The margin of error was 3 percentage points with 95% con fi dence. Which of the following represents a reasonable interpretation of the survey results? For those not reasonable, explain the fl aw. (a) We are 95% con fi dent that the proportion of adult Americans who would be bothered to stay in a room on the 13th fl oor is between 0.10 and 0.16. Answer: (b) We are between 92% and 98% con fi dent that 13% of adult Americans would be bothered to stay in a room on the 13 th fl oor. Answer: (c) In 95% of samples of adult Americans, the proportion who would be bothered to stay in a room on the 13th fl oor is between 0.10 and 0.16. Answer: (d) We are 95% con fi dent that 13% of adult Americans would be bothered to stay in a room on the 13th fl oor. Answer: 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. Answer: (b) Find the t - value such that the area in the right tail is 0.10 with 32 degrees of freedom. Answer: (c) Find the t - value such that the area left of the t - value is 0.05 with 6 degrees of freedom. [Hint: Use symmetry.] Answer:Page 2
STA 2014 Week 10 Individual Work Solution Correct Answers Statistics STA 2014 Week 10 Individual Work 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. Objective: Use confidence intervals appropriately . 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 fl oor of a hotel. Interestingly, 13% said it would bother them. The margin of error was 3 percentage points with 95% con fi dence. Which of the following represents a reasonable interpretation of the survey results? For those not reasonable, explain the fl aw. (a) We are 95% con fi dent that the proportion of adult Americans who would be bothered to stay in a room on the 13th fl oor is between 0.10 and 0.16. Answer: (b) We are between 92% and 98% con fi dent that 13% of adult Americans would be bothered to stay in a room on the 13 th fl oor. Answer: (c) In 95% of samples of adult Americans, the proportion who would be bothered to stay in a room on the 13th fl oor is between 0.10 and 0.16. Answer: (d) We are 95% con fi dent that 13% of adult Americans would be bothered to stay in a room on the 13th fl oor. Answer: 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. Answer: (b) Find the t - value such that the area in the right tail is 0.10 with 32 degrees of freedom. Answer: (c) Find the t - value such that the area left of the t - value is 0.05 with 6 degrees of freedom. [Hint: Use symmetry.] Answer: