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METHOD 2:

Press q † to access the

statistics menu.

Press 4 to access LinReg ax+b.

Select the options as shown at right.

Press  to highlight CALC and press

(a)

1.196...a =

and

3.856...b =−

The least-squares regression line is

1.20 3.86yx=−

(2 dp).

(b)

Press a 2 and enter

Press ) n.

Hence, correct to the nearest centimetre,

the humerus bone length is estimated to

cm.

Example

A Mathematics test consists of 10 multiple choice questions each of which has five possible

answers. A student makes a random guess at each of the questions.

Use the TI-30X Plus MathPrint™ to find the probability that they guess five correct answers.

Give your answer correct to four decimal places.

Keystrokes and solution:

Let

represent the number of correct

answers and

( )

~ Bin 10,0.2X

Texas Instruments MathPrint TI-30X Plus Quick Guide

Other manuals for Texas Instruments MathPrint TI-30X Plus