In a normally distributed data set with a mean of 22 and a standard deviation of 4.1, what percentage of the data would be between 17.9 and 26.1?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

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%

Determine the intercepts of the line that passes through the following points. (15,-3)(15,−3) (20,-5)(20,−5) (25,-7)(25,−7)