HP HP-11C User Manual

Section 10: Applications Programs 185
Keystrokes Display
(fJCLEAR
(f](Fix]4
Set User Mode.
8 (ENTER]9.6 1.0000
50 [ENTER]46.75 2.0000
47 [ENTER]51.85 3.0000
56 [ENTER]54.4 4.0000
100 5.0000 Error.
100 4.0000 Correction.
5 [ENTER]8.25 5.0000
14 (ENTER]9.15 [A] 6.0000
4.8444 X12
Example 2: The following table shows the observed frequencies
in tossing a die 120 times. x° can be used to test if the die is fair. (df
=5.) Note: Assume that the expected frequencies are equal.
Number 12| 3| a4 | s |
Frequency O, | 25 | 17 | 15 | 23 | 24 | 16
Keystrokes Display
[f)CLEAR [REG]
25(B)17(8]19(B] 3.0000 Error.
19(9](=-] 2.0000 Correction.
15(B)23 [B)24 [B)
16 (B) 6.0000
(D] 5.0000 X9
20.0000 E
The value of x? for df =5 and 5% significance (found on p. 438 of
Freund’s Mathematical Statistics, 2nd edition)is 11.070. Since 5.00
is less than 11.070, no statistically significant differences exist
between the observed and expected frequencies.
Finance: Annuities and Compound Amounts
This program can be used to solve a variety of problems involving
money and time. The following variables (except the interest rate,

HP HP-11C Specifications

General

Brand	HP
Model	HP-11C
Category	Calculator
Language	English