Texas Instruments TI-84 Plus Manual page 89

TI-83, TI-83 Plus, TI-84 Plus Guide
To draw a graph of the normal density function, note that nearly
all of the area between this function and the horizontal axis lies
within three standard deviations of the mean. Set
Xmin = 9 – 3 = 6
and Use to draw the graph. Reset
Xmax = 9 + 3 = 12. ZoomFit
−
to in preparation for the next step, and press
Ymin 0.1 GRAPH .
With the graph on the screen, press
2nd TRACE (CALC) 7
At the prompt, enter 9 At the
[∫f(x)dx]. Lower Limit? . Upper
prompt, enter 10. The probability is displayed as an area
Limit?
and the value is printed at the bottom of the graphics screen.
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