When Probability is strictly less than...

Dwolfson

When Probability is strictly less than should I compute something like P(X<1) as:

1-P(X<1)[tex]^{c}[/tex] = 1-P(X[tex]\geq[/tex]1)

Thanks,
D

statdad

Short answer: no, there is no need to do that. Software (or tables, if you still need to use those) will allow you to calculate [tex] P(X < 1) [/tex] and things similar just fine.

chiro

When you are dealing with continuous distributions the probability of 1 - P(X < 1) and 1 - P(X <= 1) are treated the same. If the random variable is discrete it will make a difference.