def cover?(other)
      time = self.case.compare_time.to_sym
      analysis[time].cover?(other.analysis[time], self.case.covering.alpha_level.abs)
    end
def cover?(other)
      time = self.case.compare_time.to_sym
      analysis[time].cover?(other.analysis[time], self.case.covering.alpha_level.abs)
    end
Return true, if other's mean value is indistinguishable from this
 object's mean after filtering out the noise from the measurements with a
 Welch's t-Test. This mean's that differences in the mean of both clocks
 might not inidicate a real performance difference and may be caused by
 chance.