What happens to the confidence interval when the confidence level is changed from 95% to 90%? ‍ a. the margin of error decreases and the interval becomes narrower.‍ b. there is no change.‍ c. the margin of error increases and the interval widens. ‍

Bonus question: according to wikipedia, in chinese philosophy yin and yang "describes how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent." what are some examples from the story that amy tan may have intentionally incorporated elements of yin and yang philosophy into this story? select 2.

The social contact theory states that

African american men were illustrated as men who