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stat - whiteblue
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03-14-2006, 11:17 AM
A group of researchers mistakenly conclude from a poorly designed
experiment that acetaminophen cures the common cold. They have committed which of the following? A. 1-b error B. Alpha error C. Beta error D. Type I error E. Type II error
03-14-2006, 02:01 PM
Because the null hypothesis turned out to be right. This is a type 1 error.
03-14-2006, 02:12 PM
Type 1 means rejects the null hypothesis which is true.
03-14-2006, 03:13 PM
exactly- here the null hypothesis is Acetaminophen does not cure common cold.
03-14-2006, 07:47 PM
That is good. But it is not very easy to determine what exactly the null hypothesis is.
03-14-2006, 08:03 PM
TYPE ONE ERROR REJECTING NULL HYPOTHESIS WHEN IT IS TRUE
IF THEY HAVE SAID PARACETAMOL DOESNOT CURE COMMONCOLD AND YOU HAVE ACCEPTED IT THEN IT BECOMES TYPE 2 ERROR NULL HYPOTHESIS IS THE HYPOTHESIS OF NO DIFFERENCE . AS A RESEARCHER YOU DO NOT LIKE TO PROVE NULL HYPOTHESIS YOU WANT TO PROVE ALTERNATIVE HYPOTHESIS GO FROM THERE YOU CAN REACH SOMEWHERE IN RIGHT PLACE IN THESEQ
03-15-2006, 01:05 AM
Whenever you see a q like this, decide what happens if the experiment fails. That is the null hypothesis. Work from there.
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