5 out of every 10 kid's meals contain a toy car. Find the probability that (a) You must purchase seven kid's meals to find a toy car.

(b) You must purchase fewer than seven kid's meals to find a toy car.

(c) A toy car is not in any of the first four kid's meals you purchase.

Round all answers to four decimal places.

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