Exam 1 FALL 08 VERSION A solutions

# What is the sample standard deviation a 767 b 600 c

• Notes
• 7

This preview shows page 4 - 7 out of 7 pages.

10. What is the sample standard deviation? A. 7.67 B. 6.00 C. 4.67 D. 2.18* 11. What is the mode? 12. What is the median? 13. What is the Z score of the data point 11? 14. The range of these data is? A. 46 B. 11 C. 6*

Subscribe to view the full document.

D. 2 The following information is for Questions #15 through #19: As part of a research project a student at UNT randomly interviewed 24 fellow students concerning their monthly health insurance costs. The goal was to estimate the student insurance costs for all UNT students. Data below are in \$/month. First Quartile = 104 Third Quartile = 194 98, 104, 104, 128, 144, 149, 152, 156, 166, 171, 173, 174 Mean = 183.39 178, 181, 183, 185, 191, 197, 200, 211, 246, 281, 290, 300 Std. Dev. = 54.88 15. Using the data above, what is the 80 th percentile? 16. The 38 th Percentile is: 17. The Z Score for the data point 290 is: 18. The Median of these data is: A. 0 B. 176* C. 178 D. 290 19. Using the data you have shown above, how many data points are actually within +2.0 and -1.0 standard deviations of the mean?
20. Considering the data set above, is it positively or negatively skewed. Use the Pearson Coefficient concept A. Positive* B. Negative 21. A random sample (n = 420) has a standard deviation = 5. The Z score of the observation = 80 is 3.40. What is the mean of these data?

Subscribe to view the full document.

You've reached the end of this preview.

{[ 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