For 200 births, the probability of exactly 90 girls is 0.0208 and the probability of 90 or fewer girls is 0.089. • is exactly 90 girls in 200 births unlikely? • among 200 births, is 90 girls an unusually low number of girls?

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