Becoming a leader requires the following skills EXCEPT ________

Effective teams should avoid conflict at all costs

Indicate whether the statement is true or false.

A study was designed to investigate the effects of two variables — (1 ) a student's level of mathematical anxiety and (2 ) teaching method — on a student's achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 300 with a standard deviation of 30 on a standardized

test. Assuming a non-mound-shaped distribution, what percentage of the students scored over 390? A) approximately 2.5% B) at least 89% C) at most 5.5% D) at most 11%