Mathematics, 19.09.2019 03:50 joelpimentel
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? 0.086% 0.533% 1.11% 2.22%
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