An alternative hypothesis is typically represented by Ha.

The dramatic increase in the south's slave labor force between 1810 and 1860 was due to:

A. An increase in African trade B. The importation of slaves from the west Indies C. An increase in the severity of fugitive slave laws D. The accusation of Louisiana E. The natural population increase of American-born slaves

Personal interviews conducted at central locations (mall intercept and CAPI) offer the least degree of environmental control

Indicate whether the statement is true or false