SOLUTION: An advertisement claims that Fasto Stomach Calm will provide relief from indigestion in less than 10 mins. For a test of the claim, 35 individuals were given the the product, and t
Algebra.Com
Question 189953: An advertisement claims that Fasto Stomach Calm will provide relief from indigestion in less than 10 mins. For a test of the claim, 35 individuals were given the the product, and the average time was 9.25 mins, with a standard deviation of 2 mins. Can one conclude, at the 0.05 level of significance that the claim is justified?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
An advertisement claims that Fasto Stomach Calm will provide relief from indigestion in less than 10 mins. For a test of the claim, 35 individuals were given the the product, and the average time was 9.25 mins, with a standard deviation of 2 mins. Can one conclude, at the 0.05 level of significance that the claim is justified?
--------------------------
Ho: u >= 10
Ha: u < 10 (Claim)
-----------------
Critical Value for left-tail T-test with df= 34 = -1.691
Test statistic: t(9.25) = (9.25-10)/[2/sqrt(35)] = -2.2185
p-value: P(t<-2.2185) = 0.0166
------------------------------------
Conclusion:
Since the p-value is less than 5%, reject Ho.
The test supports the companies claim.
==========================================
Cheers,
Stan H.
RELATED QUESTIONS
an advertisement claims that fasto stomach calm will provide relief from indigestion in... (answered by stanbon)
A study conducted by the research department of a pharmaceutical company claims that the... (answered by stanbon)
A study conducted by the research department of a pharmaceutical company claims that the... (answered by stanbon)
Two popular drugs used for the treatment of depression are Resithan and Exemor. A random... (answered by stanbon)
A study conducted by the research department of a pharmaceutical company claims that the... (answered by stanbon)
An advertisement for an orang drink claims that the drink contains 10% orange
juice. How (answered by ptaylor)
An advertisement for a grape juice claims that the drink contains 10 percent grape juice. (answered by ankor@dixie-net.com)
An advertisement for a grape juice claims that the drink contains 10 percent grape juice. (answered by jorel1380)
An advertisement for grape drink claims that the drink contains 10% grape juice. How much (answered by checkley77)