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S2 quick question watch

1. fe
2. (Original post by Lunch_Box)
Part e

Am I missing something very obvious?

I'm not sure why P(X=1) is not 1/6
For a continuous random variable P(X=x) = 0 for all x.
3. (Original post by BabyMaths)
For a continuous random variable P(X=x) = 0 for all x.
But I thought we assumed it was a continuous uniform distribution?
4. (Original post by Lunch_Box)
Part e

Am I missing something very obvious?
The fact that this is a continuous distribution so that P(X=x) = 0
5. (Original post by Lunch_Box)
But I thought we assumed it was a continuous uniform distribution?
No we didn't. It says it the question, "A continuous random variable X..."
6. ok thanks.
7. (Original post by Lunch_Box)
But I thought we assumed it was a continuous uniform distribution?
Still continuous
8. (Original post by Lunch_Box)
Part e

Am I missing something very obvious?

I'm not sure why P(X=1) is not 1/6
The continuous distribution means that a fixed value has no probability. If you think about the normal distribution, you always do calculations on a range of values. The reason it doesn't work for one value, is because the line you extrapolate from can be infinitesimally thin so it doesn't have a single value.

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