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Contents iii

9 Inference aplet

About the Inference aplet .......................................................................9-1

Getting started with the Inference aplet............................................9-2

Importing Sample Statistics from the Statistics aplet.......................9-5

Hypothesis tests......................................................................................9-9

One–Sample Z–Test .........................................................................9-9

Two–Sample Z–Test.......................................................................9-10

One–Proportion Z–Test ..................................................................9-11

Two–Proportion Z–Test..................................................................9-12

One–Sample T–Test .......................................................................9-13

Two–Sample T–Test.......................................................................9-14

Confidence intervals.............................................................................9-16

One–Sample Z–Interval..................................................................9-16

Two–Sample Z–Interval.................................................................9-17

One–Proportion Z–Interval.............................................................9-18

Two–Proportion Z–Interval............................................................9-19

One–Sample T–Interval..................................................................9-20

Two–Sample T–Interval.................................................................9-21

10 Using mathematical functions

Math functions......................................................................................10-1

The MATH menu............................................................................10-1

Math functions by category..................................................................10-3

Keyboard functions.........................................................................10-4

Calculus functions...........................................................................10-7

Complex number functions.............................................................10-8

Constants.........................................................................................10-9

Hyperbolic trigonometry.................................................................10-9

List functions ................................................................................10-10

Loop functions..............................................................................10-11

Matrix functions............................................................................10-11

Polynomial functions....................................................................10-12

Probability functions.....................................................................10-13

Real-number functions..................................................................10-15

Statistics-Two ...............................................................................10-18

Symbolic functions.......................................................................10-19

Test functions................................................................................10-20

Trigonometry functions ................................................................10-21

Symbolic calculations.........................................................................10-22

Finding derivatives .......................................................................10-23

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