Obtain the following Z-score: z0.20

Question

How do you Obtain the Z-score For This Question 

Answer 1

z = (X - μ) / σ, where X represents the raw score, μ is the mean, and σ is the standard deviation.

A z-score table gives the percentages of scores above and below the given "z."

Answer 2

Look up 0.20 in a z-score table (http://www.z-table.com/) then read off the z-score from the row and column.