John Lexmark wrote:
> Please help me to solve this problem, I am stuck...
>
> An inspector inspects large truckloads of potatoes to determine the
> proportion p in the shipment with major defects prior to using the potatoes
> to make potato chips. Unless there is clear evidence that this proportion
> is less than 0.10 she will reject the shipment. To reach a decision she
> will test the hypotheses
>
> H0: p=0.10, Ha: p<0.10
>
> Using the large sample test for a population proportion. To do so, she
> selects an SRS of 50 potatoes from the more than 2000 potatoes on the truck.
> Suppose that only 2 of potatoes sampled are found to have major defects.
> Determine the P-value of her test.
>
> I really appreciate your helps.
>
Spot the homework! I'll just say it looks like a normal approximation to a
binomial, and hope that there are enough clues in there to help you find the
correct section of your notes.
I can't do any more - if I tell you the answer, I'll get a visit from Marge
Inoferror who'll beat me around my posterior.
Bob
--
Bob O'Hara
Metapopulation Research Group
Division of Population Biology
Department of Ecology and Systematics
PO Box 17 (Arkadiankatu 7)
FIN-00014 University of Helsinki
Finland
tel: +358 9 191 7382 fax: +358 9 191 7301
email: [EMAIL PROTECTED]
To induce catatonia, visit:
http://www.helsinki.fi/science/metapop/
I have yet to see any problem, however complicated, which, when you looked at it
in the right way, did not become still more complicated. - Poul Anderson
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