Hand in Monday Please read Ch. 15--lots
of jargon and weird stuff!
Continue with shoebox numbers:
on a separate sheet:
If you haven't already, get a sample of size 4 from each of the two
shoeboxes (in class, or outside my door.) (White from red-top box, Yellow
from green box.): Bring Mon:
A. For each of your samples of
size n=4 from the two shoeboxes *(keep track of which box they
came from!):
test H0: µ=20
vs. Ha: µ
> 20. Do it like this:
--Find xbar (may have already).
--Standardize your xbar, thus finding a z (assuming
the population mean is 20, and the population s.d. is 4, so the s.d.
for Xbar is 2)
--Use the standard normal table to find the probability
to the right of your z. (this is the "P-value" for your
x-bar.)
--Is your P-value smaller (less likely) than alpha
= .10? (Y/N) If Yes, your result is "significant at the alpha = .10
level"
--NOW Do you think the box has mean >
20?
Be ready to add your results to the circulating
sheets Monday.
*Boxes outside my door, if you didn't get your
samples already.
<>Beginning Ch. 15
p. 364, 15.1 Anemia
15.2,Older students and more, was done in class,
write it up for yourself.
To work ahead, see Wed. Day 35
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Read,
to discuss |
Optional
(more practice)
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