HP 10bII+ Financial \5V, ]oF, 7V]F, 17GV4

Probability

Table 1-32 Probability keys

Keys	Description
]F	Calculates a cumulative normal probability
	given a Z-value.
]o	Calculates a Z-value given a cumulative
	normal probability.
F
]I	Calculates the cumulative Student’s T
	probability given degrees of freedom and a
	T-value.
]o	Calculates a T-value given degrees of
	freedom and the cumulative Student’s T
I	probability.
]<	Calculates number of permutations of n items
	taken r at a time.
]9	Calculates number of combinations of n taken
	r at a time.
]E	Calculates factorial of n (where -253 < n <
	253).

Enter .5 as a Z-value and calculate the cumulative probability of the Z-value and the Z-value from a given cumulative probability.

Table 1-33	Calculating the probability
Keys		Display	Description
\5V		0.00000	Sets number display to five
			digits to the right of the
			decimal.
7V]F		.69146	Calculates the cumulative
			probability of the Z-value.
17GV4		.94146	Adds .25.
]oF		1.56717	Calculates the Z-value from

the cumulative probability.

For more information on probability, refer to the section titled, Probability in chapter 12, Statistical Calculations.

At a Glance... 19