Share
Explore BrainMass

Difference in Home runs between leagues

In the 2005 Major League Baseball season, a random sample of 10 American League teams' home runs showed a mean total of 175.3 with a standard deviation of 31.7. In the National League a random sample of 10 teams' home runs showed a mean of 159.6 with a standard deviation of 31.53. Is the difference in home runs between leagues significant?

American HR National HR
Boston 199 Atlanta 184
New York Yankees 229 Arizona 191
Oakland 155 Houston 161
Baltimore 189 Cincinnati 222
Los Angles Angels 147 New York Mets 175
Cleveland 207 Pittsburgh 139
Chicago White Sox 200 Los Angeles Dodgers 149
Toronto 136 San Diego 130
Minnesota 134 Washington 117
Tampa Bay 157 San Francisco 128
1753 1596

American League

HR
count 10
mean 175.30
population standard deviation 31.70

National League

HR
count 10
mean 159.60
population standard deviation 31.53

From this information that was gathered I need to set up/formulate a research hypothesis from the research question, that will:
test 2 or more populations.

I need a numerical and verbal hypothesis statement regarding the issue of MLB and if the difference in home runs between leagues is significant.

Solution Summary

A Complete, Neat and Step-by-step Solution is provided in the attached Excel file.

$2.19