Variables
Used:
D Dummy variable of integration.
M Population mean, default value zero.
Q Probability corresponding to the upper-tail area.
S Population standard deviation, default value of 1.
T
Variable
used
temporarily
to
pass
the
value
S\/2ir
to the
inverse
program.
X Input value that defines the left side of the upper-tail area.
Example 1.
Your
good friend informs you that your blind date has
"3<t"
intelligence.
You
interpret this to mean that this person is more
intelligent than the
local
population
except
for people more than
three standard deviations above the mean. Suppose that you intuit
that the local population contains 10,000 possible blind dates. How
many people fall into the
"3a"
band? Since this problem is stated in
terms
of
standard
deviations,
use
the
default
values
of
zero
for
M
and
1
for
S.
Keys:
XEQl S
R/S
R/S
IXEQID
3[r7s]
Display:
Description:
M70.0000
Starts
the
initialization
routine.
S71.0000
Accepts the default
value
of
zero
for
M.
1.0000
Accepts the default
value
of
1
for
S.
X?value
Starts
the
distribution
program and prompts
for
X.
Q=0.0014
Enters
3
for
X
and
starts computation of
Q(X).
Displays the ra
tio of
the
population
smarter
than
everyone
within
three
standard
deviations
of
the
mean.
13:
Statistics
Programs
219
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