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No. & Date Asked	Question
# 899 :: 9/5/11	In a study , the average age of the male candidates who were affected , was 38.20 whereas the average age of the female subjects was calculated to 34. . . Variance, Standard Deviation
# 803 :: 8/28/09	In a study, the sum of squared deviations from the mean for the sample is 12 and there are 4 participants. What is the estimated population variance?. . . Variance
# 470 :: 10/9/08	A telescope manufacturer wants its telescopes to have standard deviations in resolution to be significantly below 2 when focusing on objects 500 light. . . Chi-Square Distribution, Confidence Intervals, Standard Deviation, Variance