Evaluate 243
10
7


⋅243
10
1

This question awards 100 ! i really don’t want to fail i will also mark you !

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%

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i