Ethan has a box of assorted tea bags. there are seven green tea bags, six peppermint tea bags, five lemon tea bags, and six plantation mint tea bags in the box. ethan predicts that when he picks a tea bag from the box without looking, he will draw a peppermint tea bag one-fourth of the time. which activity would best allow ethan to test his prediction? a. randomly select a tea bag from the box and see if it is a peppermint tea bag. b. randomly select and replace a tea bag 80 times. then, observe how close to 20 times a peppermint tea bag is drawn. c. randomly select a tea bag. then, continue to draw another tea bag until all six peppermint tea bags are drawn. d. randomly select and replace a tea bag 90 times. then, observe how close to 24 times a peppermint tea bag is drawn.

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

What is the first step of an indirect proof of a number that is divisible by two

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.