13) 18 23 -17 25 15 18 18 -16 27 25 -18 19
Calculate the average arithmetic mean) of the list of numbers shown in the table. (rounded to the nearest tenth)
A)
11.0
B)
11.4
12.0
D)
12.5
E)
21.7

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?