36-201 INTRODUCTION TO STATISTICAL REASONING

Assignment #9  

                Due:  In Lab, Thurs Mar 18 and Fri Mar 19.

Be sure to write your name and SECTION on your paper.  

STAPLE, DO NOT PAPERCLIP OR FOLD/TEAR, YOUR PAGES TOGETHER.


1. Moore, p. 423--424, problem 7.20.

2. Moore, p. 425, problem 7.25.  Careful!

3. Moore, pp. 425--426, problems 7.27 and 7.28.  Your answers need not
be long but they should show that you thought carefully about the problem.

4. Siegel and Morgan, pp. 238-239, problem 21.  For part (a), do only 
the Venn diagram and the joint probability table.  Then go on and do
parts (b) through (g) as written.  This is very similar to the lab 
problem we did in lab09.  For part (e) "OR" means "french or statistics
or possibly both".

5. Siegel and Morgan, p. 289, problem 21.  For the probability
calculations, use the 68-95-99.7 rule, which is justified by the Central
Limit Theorem (since the problem is asking about averages).  If the
z-scores are not exactly +/- 1, 2 or 3, interpolate, or use Table 8.7 on
p. 262 of Siegel and Morgan (but make VERY CLEAR which way you did
it---interpolation or table).