The Scores of Students on a Standardized Test Form a Normal

Multiple Choice

The scores of students on a standardized test form a Normal distribution with a mean of 300 and a standard deviation of 40. Using the fact that the middle 50% of the data falls within 0.67 standard deviations from the mean, find the lower and upper quartile scores for this test.

A) 299.33 and 300.67
B) 273.2 and 326.8
C) 260 and 340
D) 150 and 450