What is the mean of the data set?

{11, 14, 15, 16, 16, 18, 20, 20, 22, 22}

a. 11

b. 15.6

c. 17.4

d. 18

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

What is the area of the triangle 10 13 12

Answer! if you don’t mind, can you explain