# probability calculation

#### biggest

##### New Member
Calculate the probability that P [X-50]> 0
(formalize the question and continue with the resolution).

can someone help me? thanks!

#### hlsmith

##### Not a robit
Yes, provide much more information. For example is "X-50" representing X minus 50 or a range, so X:50. Also, hey what in the world were you provided. Obviously your instructor did not just provide the following and expect you to be able to answer it, so why do you think we divine such omnipotent powers?

Calculate the probability that P [X-50]> 0
(formalize the question and continue with the resolution).

#### biggest

##### New Member
I apologize for the inaccurate question, but I am really finding it very difficult. X-50 is a minus. I would like at least some suggestions for resolution, if possible ... thanks!

#### hlsmith

##### Not a robit
But is data provided? X could be any type of data (continuous, binary presented as percentages), I would have to imagine more information should be available or at least tell us the context. Is this suppose to be a one-sided one-sample ttest and they want a p-value, which is not the probability that P[X-50] > 0. I am gonna have to give up on trying to help unless you provide drastically more information.

@Dason - isn't P vs Pr used for continuous vs discrete or vice versa?

#### Dason

@Dason - isn't P vs Pr used for continuous vs discrete or vice versa?
I've never really seen any distinction like that.

But yeah unless OP literally got a white sheet of paper with just that sentence and nothing else on it then there is context aren't mentioning.

#### biggest

##### New Member
I apologize again. X is a Gaussian random variable, expected value 50. There is also a standard deviation of 289.