Pvalue PZ03 1 PZ03 1 PZ

P-value = P(Z>0.3) = 1 - P(Z<0.3) = 1 - 0.6179 = 0.3821 On this P-value answer to a question why do they subtract by 1? do you always do that?

Solution

P-value = P(Z>0.3) = 1 - P(Z<0.3) = 1 - 0.6179 = 0.3821

Well, this is because P(Z<0.3) + P(Z>0.3) = 1

The sum of probabilities will always be 1

Since from the z table we get the corresponding area under the standard normal curve to the left of z.

So P(Z<0.3) = 0.6179

And thus, P(Z>0.3) = 1 - P(Z<0.3) = 1 - 0.6179 = 0.3821