Suppose that , and are estimators of the parameter

The GPA (grade point average) of students who take the AP Statistics exam are approximately normally distributed with a mean of 3.4 with a standard deviation of 0.3. What is the probability that a student selected at random from this group has a GPA lower than 3.0? 0.0918 B. 0.4082 C. 0.9082 D. -.0918 E. 0 ................
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