Math 151 , Day 36, Friday, Nov.16, 2007  . hit reload...

HW Day35 (for Mon.) . P. 355, choosing n for a desired C and m.   Check,  sample size 14.17.  Read ahead Please! Chapter 15, Signifincance testing (the "other" big topic in inference)
Moore Ch. 14, Day 35  Hand in Monday 

A.  New Shoeboxes: On a Separate sheet:  (2 shoeboxes. )The shoeboxes are outside my door if you missed doing them in class. For each sample of size  4 from a shoebox, write down the values, find the mean, (know which box you got them from: White #s, green box. Yellow, red top.) and tell whether you believe the population mean for that box is 20, or something bigger. (Your gut feeling.) Does it help to know that the standard deviations for the shoeboxes are both 4? ( Bring your sample numbers and xbars  to class  to pool.)   (This is related to Chapter 15, where we'll learn the formal methods.)If you still have the slips, please return them to me!

Sample size for C.I. (& review of CI computations)You can check using the bottom section of the Confidence Interval Excel sheet.
p. 356, 14.10 Estimating mean IQ
p. 358 14.24 Hotel managers
p. 360, 14.33 calibrating a scale

Read, 
to discuss 		Optional
Exam 4 TODAY. Covers  Ch. 10 p. 257 on (Continuous models and R.V.'s), plus of course being able to use the rules p. 253 for areas, in the continuous case. Ch. 11 up to p. 286 only, Ch. 14 to p.354, Ch. 16 to p. 391. (i.e. thru Day 34 HW).   Sample Exam is good as written. (Handed out Fri. Outside my door..)  Solutions .
   Get in touch ASAP if anything changes about your needs as to the time to take the exam (Default 11:30, or as signed up Wed.)

     Buffer against one low hour exam:
The final % exam grade minus 10 points will be substituted for the lowest hour exam grade, if it is higher.

Examples:
Ex1 Ex2 Ex3
 Ex4 final % final -10
Student 1 Original 85 80 85
 60 85 75, replaces lower 60
Treated 85 80 85
 75 85 <--ß These will be used.
Student 2 Original 85 80 80
 70 75 65, lower than 70, don't replace.
Treated 85 80 80
 70 75
Student 3 Original 85 50 75
 55 85 75, replaces lower 50
Treated 85 75 75
 55 85 <--ßThese will be used
This is to encourage those who are nervous about Exam 4, and to encourage all to try to put it together for the final.
New Shoeboxes: On a Separate sheet:  (2 shoeboxes. )The shoeboxes are outside my door if you missed doing them in class.  From each shoebox, take a sample of size 4, and write down the values.  (know which box you got them from: White #s, green box. Yellow, red top.)   Do A above for HW.

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