Posted by kiki on Thursday, April 25, 2013 at 3:16pm.
a potato chip manufacturer has been accused of shortchanging their customers with 10 ouce of bags potato chips. a sample of 50 of that company's 10 ounce bags was take, and it was found that the average weight was 9.8 ounces with a standard deviation of 0.3 ounces.can we conclude that the company's bags of potato chips are less than 10 ounces?use 5%significance level

math  PsyDAG, Friday, April 26, 2013 at 3:21pm
Z = (mean1  mean2)/standard error (SE) of difference between means
SEdiff = √(SEmean1^2 + SEmean2^2)
SEm = SD/√n
If only one SD is provided, you can use just that to determine SEdiff.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
Answer This Question
Related Questions
 Finance  1) A potato chip manufacturer has been accused of shortchanging their ...
 8th grade math  A box contains 5 bags of potato chips, 4 bags of pretzels and 1...
 Chemistry  On a 10.5 ounce bag of potato chips, the manufacturer states that ...
 statistics  The actual amount of potato chips that a filling machine puts into ...
 stats  In order to make sure that their bags of chips are of sufficient weight...
 stats  In order to make sure that their bags of chips are of sufficient weight...
 statistics  The weight of corn chips dispensed into a 19ounce bag by the ...
 statistics  The amount of corn chips dispensed into a 16ounce bag by the ...
 General Biology  There is only one bag potato chips left on the planet Earth. ...
 stats  Buckley Farms produces homemade potato chips that it sells in bags ...
More Related Questions