When i pour my coffee it is 185 degrees fahrenheit. as it sits on my desk it loses temperature at a rate of 3 degrees per minute. write an equation relating the time it sits on my desk and the temperature.

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%