Math 151 , Fall 2004, Wednesday Day 35, Nov. 17 Hit reload...After class

HW assignment Day 35
(re)Read rest of 6.3.  Next 7.1
Will be assigned this  Monday:
(* do not require table C, can use for review)
Table C:  
p.341, 6.48 CEO pay again (what you would do if you didn't have Table A)
p. 341, *6.46, 6.49 general z statistic, significance,Turn the page--6.49 continues. 
p. 342 *6.50 patent protection; another z.
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Fixed significance levels: if you only have table C, what can you say? 
p. 337, 6.37 testing number generator
6.38 nicotine content
Optional 
Review (for exam): p. 360, 6.75

Optional material
Sec. 6.2  Two-sided test is doable using confidence interval (pp. 337-9)
6.39 IQ tests Use your calculator to get the sample mean
 

 
>EXAM 3  this Friday, Day 36, Nov.19, closed book.   I will give you Normal table and Table C (t-table).
Ch. 4 +Ch. 6
(Through 6.3, p. 346 (not multiple analyses, etc.).  Not specifically Table C, pp. 334-7  Not "tests from CI's", pp. 337-8.  )
All Sig. test problems can be done without table C, tho problem 2 on sample exam  suggests it.
To do sample exam #2 without table C: z = 1.831, p =1-.9664 = .0336.   .0336 is less than .10 and .05, but not less than .025 or .01 , so result is sig. at .10, .05, not at the other levels.
Sample exam outside my door, solutions-- on reserve, outside my door.
You may keep the HW due today to study from if you like.  Hand it in Friday.

Review testing Day 34
Questions on HW , questions on sample exam, others.

pp. 345-346
>>Data must be from SRS or reasonable facsimile
      All the other warnings p. 312:  normality, watch out for outliers, skewness.  Sigma known or n large.
All the warnings about designing experiments and surveys still apply.

Test ends here.

Start here Monday
Review "Significance " see Day 33
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Do "Significance " using table C, see Day 34

 "Significance testing" vs. "Hypothesis testing"--gathering evidence vs. making decisions.
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