In a survey of 50 people, 80% read newspapers at least once per week. Find the margin of sampling error

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?

What is negative 3/9 times negative 2/8 ?

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