At last month's trivia competition, 20 questions were about history and geography, and the other 35 questions were about pop culture. this month, the number of history and geography questions increased by 15%, while the number of pop culture decreased by 20%.

find the percent change in total number of questions from last month to this month.

a.
the total number of questions decreased by about 4%.
b.
the total number of questions increased by about 17.5%.
c.
the total number of questions increased by about 8%.
d.
the total number of questions decreased by about 7%.

The table shows population statistics for the ages of best actor and best supporting actor winners at an awards ceremony. the distributions of the ages are approximately bell-shaped. compare the z-scores for the actors in the following situation. best actor best supporting actor muequals42.0 muequals49.0 sigmaequals7.3 sigmaequals15 in a particular year, the best actor was 59 years old and the best supporting actor was 45 years old. determine the z-scores for each. best actor: z equals best supporting actor: z equals (round to two decimal places as needed.) interpret the z-scores. the best actor was (more than 2 standard deviations above more than 1 standard deviation above less than 1 standard deviation above less than 2 standard deviations below) the mean, which (is not, is) unusual. the best supporting actor was (less than 1 standard deviation below more than 1 standard deviation above more than 2 standard deviations below more than 1 standard deviation below) the mean, which (is is not) unusual.