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We need to find
Press q † > to access the
probability distributions menu.
Press (or scroll down) to select
Binomialpdf.
Select SINGLE and press ].
Enter the required values for
shown at right.
Press to highlight CALC and press
n.
So
Note: If you need to use Binomialpdf
again, press ] to highlight SOLVE AGAIN
and press n. Otherwise highlight QUIT
and press n. If your probability is
required in a further calculation, it can be
stored to a variable.
Example
If
has a normal distribution with mean
(
)
P X
32
. Give your answer correct to four decimal places.
Keystrokes and solution:
Press q † > to access the
probability distributions menu.
Press 2 to select Normalcdf.
Enter the required values for
Ensure that the lower bound is a large
negative number, for example
enter
for the upper bound.
Press to highlight CALC and press
n.
.
and
as
(4 dp).
and
.
-1E99
, and
and standard deviation
25
, find
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