The age of sudha was 5/2 times as old as her younger sister sumi in 2055 b. s. and the age of sudha will be 10 years less than twice the age of sumi in 2070 b. s. find the birth year of sumi.

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