Posted by Anonymous on Sunday, April 1, 2012 at 4:02am.
A football coach claims that the average weight of all the opposing teams’ members is 225 pounds. For a test of the claim, a sample of 50 players is taken from all the opposing teams. The mean is found to be 230 pounds, and the standard deviation is 15 pounds. At a = 0.01, test the coach’s claim. Find the Pvalue and make the decision.

statistics  PsyDAG, Sunday, April 1, 2012 at 1:04pm
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 related to the Z score. Is it larger or smaller than .01?

statistics  Baseball players, Friday, September 25, 2015 at 5:48pm
1889
Answer This Question
Related Questions
 MATH  There are ten teams in a softball league, witha na average of 14 players ...
 MATH  There are 32 teams in the NFL. Sixteen of the teams are in the American ...
 math  1. There are 44 teams in the youth football league. Each team has 28 ...
 MATH! URGENT!!!  There are 32 teams in the NFL. Sixteen of the teams are in the...
 8th grade math  There are 32 teams in the NFL. Sixteen of the teams are in the ...
 statistics  a manufacturer of detergent claims that the contents of the boxes ...
 statistics  a manufacturer of detergent claims that the contents of the boxes ...
 math  A total of four students belong to all three teams, the baseball, ...
 Math  Coach Coleman is ordering hats for this year's teams. There are 6 teams. ...
 Managerial Economics  A)Who has more monopoly powerWalMart or the ...
More Related Questions