Use the bar graph to find the experimental probability of the
event.
Spinning a Spinner
12
10
8
Times spun
6
4
2
0
1 2 3 4 5
6
Number spun
The experimental probability of spinning a 1 or a 3 is

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%