Lisa spent 1/2 of her savings on a MP3 player and 2/5 of her savings in her school clothes. What is the total fractional part of her savings tgat Lisa spent on her MP3 player and new clothes

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

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