HP 39gs_40gs_Mastering The Graphing Calculator_English_E_F2224-90010

Example 4

“Let X be a random variable, representing the heights of basketball players. If X is

⋅

normally distributed, with

= 184 5 and

= 105

then find the height which cuts off

the tallest 5% of players.”

The

MATH function which allows you to work with the normal distribution is UTPN (see page 207) which

gives the upper-tailed probability. The syntax is

UTPN( mean, variance, value).

In the Solve aplet, set

E1 to P=UTPN(M,V,X).

Enter the

NUM view press to obtain 201.35cm

There are many more ways in which the Solve aplet can be used in conjunction with the functions available in

the

MATH menu. The MATH menu is discussed in detail starting at page 165, with worked examples which

often use the Solve aplet.

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