to screenshot on mac - Go x | = psych - Google Docs x ( ) Assignment 4: Teaching a Chile x ( Quiz: Weekly Exercise courses/48252/quizzes/162890/take Youtube Maps This is a continuation of the previous question. Suppose that the lifetimes of light bulbs are approximately normally distributed, with a mean of 57 hours and a standard deviation of 3.5 hours. Random samples of 20 bulbs are to be chosen and each sample's mean lifetime will be recorded. What is the z-score for a sample mean of 59 hours? Round to 2 decimal places