Let A and B be rational numbers the difference of a and b is: always rational, sometimes rational or never rational

the product of A and B Is: always rational, sometimes rational or never rational

√ab is :always rational, sometimes rational or never rational

17 in long 1.3 ft wide and 8in high what is the volume

Identify the number 127 as a rational or irrational. explain

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