Math 151 , Day 31, Monday, Nov. 12, 2001

Add your shoebox results to each of  the 2 sheets circulating:
    the 4 values || xbar|| z (assuming mean is 20)|| P-value=P(Z > z)|| Is P-value < .10?
Add a dot for each of your xbars to the dotplot transparency circulating.

Questions on Confidence Intervals?
Significance testing:
Notes Day 30

Three minutes of silence to honor the dead of Sept. 11.
    Let us not forget also that this is the day after Veterans' Day, previously Armistice Day.

Same Quiz again as Day 29

HW:  Continue to Reread Sec. 6.2.  Focus on pp. 318-334 for next time.  When that's under control, continue.
Sec. 6.2:  (text problems same as bottom of Day 30)  Hand in Wednesday
Hand in: 
Sketching x-bars for H0, p-value 
p. 323, 6.25 SSHA 
6.26 Spending on housing

Stating null and alternative hypotheses 
p. 325 6.27, 28, 29, 30 


Calculating p-value (one-sided), relating to Sig. level 
p. 328, 6.31 and 32 (extending 6.25 and 26) 
6.33 restating jargon

Save to hand in Friday  
Calculating p-value (one or two-sided), using z test statistic, relating to Sig. level 
p. 333, 6.34 price reduc. on coffee You can do this tonight if you want.
 6.35 crankshafts true? Use your calculator to find the sample mean.
  6.36 cola? Use your calculator to find the sample mean.
Read, to discuss Optional 
(more practice) 
Stating null and alternative hypotheses 
p.340, 6.41,42 

Calculating p-value, using z test statistic, relating to Sig. level 
p. 340 6.43 watered milk?


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