Question

#29

Use the standard normal table to find the​ z-score that corresponds to the given percentile. If the area is not in the​ table, use the entry closest to the area. If the area is halfway between two​ entries, use the​ z-score halfway between the corresponding​ z-scores. If​ convenient, use technology to find the​ z-score.

the z-score that corresponds to P8 is____

I got 0.84 but it says that is wrong.

Answer 1

Solution:

We have to use the standard normal table to find the​ z-score that corresponds to the given percentile.

the z-score that corresponds to P8 is :-______?

That is we have to find z value for 8^th percentile.

That is: P( Z < z ) = 8%

P( Z < z ) = 0.08

Look in z table for Area = 0.0800 or its closest area and find corresponding z value.

Area 0.0793 is closest to 0.0800 and it corresponds to -1.4 and 0.01

Thus z value = -1.41

That is 8^th percentile z value = -1.41