Question

The z table provides _________ probabilities for positive and negative values of z.

Answer 1

Solution:

We have to fill up the blank given in the question.

The z table provides _________ probabilities for positive and negative values of z.

z table gives the probabilities of Z z values, that is it gives cumulative probabilities.

For example, if we look in z table for z = -1.25 , then from z table , we can get cumulative probability as:

Thus we get:

If we look for next z value = -1.15 , then we can see for z = -1.1 and 0.06 ,

and so on, thus we can say probabilities are cumulative.

Similarly if we look at z = 1.34, we get:

Thus we can see probabilities on z table are cumulative.

Thus answer is: Cumulative.

That is:

The z table provides cumulative probabilities for positive and negative values of z.