Work Shown

Work Shown

1. What is the probability of obtaining a test score above 80 for a distribution with a M = 75 and an SD = 6.38 (try drawing out a normal curve with the values you need to find if you’re struggling)?

a. First compute the z-score for a score of 80 by completing the transformation equation below:



b. Now look at the z score table for the z-score you obtained. You need to figure out the probability of getting above 80. Think about what is to the left of the mean on a standard normal distribution for help.



 
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