You’re going to use your TI-83 graphing calculator to compute the area between values of 7 and 9 for a distribution whose mean is 8 and whose standard deviation is 2. You would enter:
a) normalcdf (7,9,8,2)
b) normalpdf (7,9,8,2)
c) invNorm (8,7,9)
d) normalcdf (8,2,7,9)
e) normalpdf (8,2,7,9)
Step-by-step explanation: You use normalcdf to find the area under a curve. The lower bound (in this case 7) goes first followed by the upper bound, mean, and standard deviation.
