Chapter 9, Problem 85CRE

Brain Size Brain size for 20 random women and 20 random men was obtained and is reported in the table (in hundreds of thousands of pixels shown in an MRI). Test the hypothesis that men tend to have larger brains than women at the $0.05$ level. (Source: Willerman, L., Schultz, R., Rutledge, J. N., and Bigler, E., “In Vivo Brain Size and Intelligence,” Intelligence, 15(1991):223-228.)