The U.S. Open Championship is played each year in New York and Roger Federer was one of the men's best players. The U.S.

[answerhappygod]

The U S Open Championship Is Played Each Year In New York And Roger Federer Was One Of The Men S Best Players The U S 1 (89.39 KiB) Viewed 122 times

The U.S. Open Championship is played each year in New York and Roger Federer was one of the men's best players. The U.S. Open statistician kept track of every serve that Roger Federer hit during the tennis tournament. The statistician reported that the mean serve speed was 100 miles per hour (mph) and the standard deviation of the serve speeds was 15 mph. If nothing is known about the shape of the distribution, what percentage of Roger Federer's serve speeds are less than 55 mph? At most 25% At most 5.5% At most 11% Approximately 0%