The marks in an economics class are normally distributed, with a mean of 65% and a standard
Question:
a. What percentage of the class passed (that is, received a mark of 50% or higher)?
b. What percentage of the class received a mark of 45% or lower?
c. What percentage of the class received a mark between 50% and 75%?
d. What percentage of the class received a mark of 90% or higher?
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65 12 a 8944 of the class passed Px 50 Pz 50 65 12 ...View the full answer
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Related Book For 
Analyzing Data And Making Decisions Statistics For Business Microsoft Excel 2010 Updated
ISBN: 9780132924962
2nd Edition
Authors: Judith Skuce
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