Aa and bb are n×nn×n matrices. check the true statements below: a. if two row interchanges are made in sucession, then the determinant of the new matrix is equal to the determinant of the original matrix. b. the determinant of aa is the product of the diagonal entries in aa. c. detat=(−1)detadetat=(−1)deta. d. if detadeta is zero, then two rows or two columns are the same, or a row or a column is zero.

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true