Could someone PLEASE help?
The mean of the scores obtained by a class of students on a physics test is 42. The standard deviation is 8%. Students have to score at least 50 to pass the test.
Assuming that the data is normally distributed, ?% of the students passed the test.
I'm not sure if I'm understanding the question correctly. The deviation 8% means what?

Question

Could someone PLEASE help?
The mean of the scores obtained by a class of students on a physics test is 42. The standard deviation is 8%. Students have to score at least 50 to pass the test.
Assuming that the data is normally distributed,  ?% of the students passed the test.
  I'm not sure if I'm understanding the question correctly. The deviation 8% means what?

phi · Answer

"normally distributed" means if you plot a "histogram" that shows the number of people at each score, you get a "bell-shaped curve"  with a peak at the "mean"  (i.e. average score)
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