Student's t-distribution

Week 8: March 10 through 14

MATH 214 ~ Probability and Statistics for Business Majors ~ Spring 2003

Class meeting schedule and topics

Monday, March 10 ~	Student's t-distribution
Wednesday, March 12 ~	Confidence intervals for one population mean
Friday, March 14 ~	Confidence intervals for one proportion

Homework Assignments

18. Due Wednesday, March 12

    Required work

    • Read Section 7.2 about "Small-Sample Confidence Intervals for a Population Mean"
    • Exercise 7.22 on page 306

    Optional work

    • Exercises 7.23 and 7.24 on page 306

19. Due Friday, March 14

    Required work

    • Read Section 7.3 on "Large-Sample Confidence Intervals for a Population Proportion"
    • Recompute your confidence interval from the audit sampling assignment using Student's t-distribution. Write a brief interpretation of the resulting confidence interval.
    • Exercise 7.25 on page 306 (compute 95% confidence intervals too)
    • Final Exam Review Problems Part 2

    Optional work

    • Exercises 7.26, 7.27, and 7.28 on pages 306 and 307

20. Due Monday, March 17

    Required work

    • Read Section 7.4 on "Determining the Sample Size"
    • Exercises 7.34 and 7.40 on page 315

    Optional work

    • Exercises 7.37, 7.38, and 7.39 on page 315

21. Due Wednesday, March 19

    Required work

    • Read Section 8.1 on "The Elements of a Test of Hypotheses"
    • Exercises 7.50 and 7.52 on page 321

    Optional work

    • Exercises 7.51, 7.53, 7.54, and 7.55 on pages 321 and 322