For Math Guru Only!!!

Choose from the following questions:

Problems 1 – 13.

Confidence Intervals for estimating the Population Mean µ

In each problem assume a normal distribution.

Compute the following:

a) The Critical Value z* or t* whichever applies.

b) The Margin of Error.

c) The Confidence Interval

Confidence Interval:  X‾ ± ME

Normal:   ME = z*(σ/√n)

t-distribution:  ME = t*(s/√n), with df = n-1 

10. Data: Sample size: n =75, sample mean: x‾ =8.2, σ =1.1.  Confidence 96%

Week 5 Homework Assignments

1.  This week we must read:

Lane et al. Chapter 10 Illowsky et al. Chapter 8

Textbook #1: Lane et al. Introduction to Statistics, David M. Lane et al., 2013.

( http://onlinestatbook.com/Online_Statistics_Education.pdf )

Textbook #2: Illowsky et al. Introductory Statistics, Barbara Illowsky et al., 2013.( http://openstaxcollege.org/files/textbook_version/hi_res_pdf/15/col11562-op.pdf )

2.  Do the five problems listed in the table below.

3.  Please submit them in your Assignment Folder for grading.

eResources	Chapter	Problem	Page*
Lane et al.	10	4	362
		12	363
Illowsky et al.	8	106	456
		120	459
		130	461

* Page numbers are approximated due to version control of the eResources, especially for Illowsky et al.