Standard Normal Distribution

Question

Determine the value of z* such that satisfies the conditions below. (Assume that the requested value of z* is positive. Round your answers to two decimal places.)

(c) −z* and z* separate the middle 98% of all z values from the most extreme 2%

z* = ___________

Answer 1

You want the z-score for the 99th %ile (1% below -z* and 98% between -z* and z* means 99% of the scores are below z*). According to the unit normal table, this number is 2.33