Find the area of the shaded region The graph to the right de

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.

https://www.mathxl.com/Student/PlayerHomework.aspx?homeworkId=322498836&questionId=2&flushed=true&cId=3433097&centerwin=yes

Solution

You can use excel just type normalcdf(. Simply input a lower bound, and upper bound (in this case, your z-score), and press [Enter]. Without seeing the actual graph, I can\'t tell you which numbers to put because I don\'t know where the shaded area is. You say it\'s shaded at 115, but in which direction? Above x? Below x? Ranging from 100 to 115? Without that info, it\'s impossible to tell you without a visual reference. As to open graph it\'s ask for login I\'d.