________________________ during the first trimester increases the risk of infant mortality

The only time a difference between two sample means may be called

"significant" is when a. they are at least 10 points apart b. they differ by at least .05 points c. the first mean is larger than the second mean d. the null hypothesis has been rejected

Regarding achievement on standardized tests, when someone is the target of the stereotype,

a. the stereotype is ignored because the person knows better. b. the stereotype can lead to feelings of vulnerability. c. the person is most likely to do well on measures of achievement to prove others wrong. d. the socioeconomic disadvantages are the only reason for differences in achievement testing.