A)m=40 a straight line is equal to 180 degrees so do 180-115 to get the inside part of the triangle then add that number to 75 and take the sum of that and subtract it from 180 because any triangle is equal to 180
Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4