X is normally distributed and the mean of X

[TomJerry]

Question:

X is normally distributed and the mean of X is 12 and standard deviation is 4

Find

i)P(0<=X<=12)


Solution

P(X=12) = Z(12-12/4)

=0 Stuck here!

what to do next

 

[scottie_000]

Have you drawn yourself a small sketch of what the curve will look like in this case?
Remember that the mean is already at 12.
Also, since this is a continuous distribution, you need to find the probability that X is within a range of values:
P(0<=X<=12) = P(X<=12) - P(X<=0)

 

[TomJerry]

Have you drawn yourself a small sketch of what the curve will look like in this case?
Remember that the mean is already at 12.
Also, since this is a continuous distribution, you need to find the probability that X is within a range of values:
P(0<=X<=12) = P(X<=12) - P(X<=0)

Thanks