HP Prime Graphing Wireless Calculator - Manual (Page 321)

Programming in HP PPL 317
σ
1
Sets the population standard deviation for a hypothesis
test or confidence interval. For a test or interval involving
the difference of two means or two proportions, sets the
population standard deviation of the first sample. From the
Numeric view, set the value of
σ
1
.
In a program, type:

σ
1
σ
2
For a test or interval involving the difference of two means
or two proportions, sets the population standard deviation
of the second sample. From the Numeric view, set the
value of
σ
2
.
In a program, type:

σ
2
x
1
Sets the number of successes for a one-proportion
hypothesis test or confidence interval. For a test or interval
involving the difference of two proportions, sets the
number of successes of the first sample. From the Numeric
view, set the value of x
1
.
In a program, type:
 x
1
x
2
For a test or interval involving the difference of two
proportions, sets the number of successes of the second
sample. From the Numeric view, set the value of x
2
.
In a program, type:
 x
2
Xlist Contains the list of explanatory data (X) for the regression
tests and intervals. In Numeric view, enter your data in
Xlist.
Xval For the confidence interval for the mean response and
prediction interval for a future response, contains the value
of the explanatory variable (X) under scrutiny. Enter a
value when prompted by the wizard.
Ylist Contains the list of response data (Y) for the regression
tests and intervals. In Numeric view, enter your data in
Ylist.
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