Insanity is a legal term.

Which combination of factors would definitely increase the width of a confidence interval?

a. Increase the sample mean and increase the sample size b. Decrease the sample mean and increase the sample size c. Increase the sample mean and increase the percentage of confidence d. Decrease the sample mean and decrease the percentage of confidence

Damage to the left hemisphere is more likely than right hemisphere damage to impair which ability?

a. understanding the meaning of language b. understanding that someone is joking when they speak c. producing facial expressions of emotion d. understanding other people's facial expressions