Example 2

The variable Z is a standard normal random variable. What is the probability that z is greater than 1.2 or less than -1.2?

Figure 18

The desired area is to the right of 1.2 and to the left of -1.2. Since normal distributions are symmetrical, and the areas are the same, you can calculate the lower tail area and simply multiply by 2.

Table 12-24 Example converting from lower tail

Keys

Display

Description

 

 

 

J7Gy]F

 

store the value.

 

.115070

Calculate the lower tail area and

 

 

 

PG4

.230139

Calculates the result.

 

 

 

 

134 Statistical Calculations

Page 142
Image 142
HP 10bII+ Financial manual J7GyF, PG4

10bII+ Financial specifications

The HP 10bII+ Financial Calculator is a versatile and powerful tool designed to meet the needs of finance students, professionals, and anyone involved in financial planning and analysis. Known for its compactness and user-friendly interface, this calculator incorporates a range of features specifically tailored for financial calculations, making it an essential gadget for banking, real estate, and investment analysis.

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