SHOW YOUR ANSWER WITH EXPLINATION . The average commute times for employees of a large company is 22 minutes. The commute time of 12 employees are 20, 33, 27, 35, 18, 29, 40, 22, 18, 55, 13, and 14.
a) Determine the sample mean and the population mean.
b) What is the estimated margin of error of the sample population, using standard deviation?

Twelve less than a number is at most 20

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)