Giải hộ mình câu 26 với

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%

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?

Which of these triangle pairs can be mapped to each other using a single translation? cof hn