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6. To calculate Q(X) given X,
7. After the prompt, key in the value of X and press
displayed.
8. To calculate Q(X) for a new X with the same mean and standard deviation,
¥
press
9. To calculate X given Q(X), press
10. After the prompt, key in the value of Q(X) and press
displayed.
11. To calculate X for a new Q(X) with the same mean and standard deviation,
¥
press
Variables Used:
D
M
Q
S
T
X
Example 1:
Your good friend informs you that your blind date has "3σ" 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 "3σ" band ? Since this problem is stated in
terms of standard deviations, use the default value of zero for M and 1 for S.
Keys:
(In RPN mode)
t
S
¥
¥
File name 33s-E-Manual-1008-Publication(1st).doc
Printed Date : 2003/10/8
t
and go to step 7.
and go to step 10.
Dummy variable of integration.
Population mean, default value zero.
Probability corresponding to the upper–tail area.
Population standard deviation, default value of 1.
Variable used temporarily to pass the value S ×
inverse program.
Input value that defines the left side of the upper–tail area.
Display:
Size : 13.7 x 21.2 cm
D.
¥
t
I.
Description:
Starts the initialization routine.
Accepts the default value of zero for
M.
Accepts the default value of 1 for S.
Statistics Programs
Page : 386
. The result, Q(X), is
¥
. The result, X, is
π 2
to the
16–15
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