Question

Find the area of the shaded region. The graph to the right depicts IQ scores of​ adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. LOADING... Click to view page 2 of the table. LOADING... 75115 A graph with a bell-shaped curve, divided into 3 regions by 2 lines from top to bottom, one on the left side and one on the right side. The region between the lines is shaded. Moving from left to right, the x-axis below the first line is labeled 75. The x-axis below the second line is labeled 115. The area of the shaded region is nothing. ​(Round to four decimal places as​ needed.)

Answer 1

µ = 100

sd = 15

                                      

                                       = P(-1.67 < Z < 1)

                                       = P(Z < 1) - P(Z < -1.67)

                                       = 0.8413 - 0.0475

                                       = 0.7938