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you are a member of an orginization that awards money to the top students. with a mean of 1.9112, a standard deviation of 4.8, you want to choose the top 30% of students with the highest GPA. what is the minimum GPA of the students eligible for a scholarship?
Are you sure that is the correct standard deviation? 0.48 seems more likely to me.
whoops, the standard deviation is 1.401
You want to find the-score associated with an area of 0.7 to the left of it. Consult your table for this. You may have to extrapolate.
Once you have this, then convert to an-value using: