  We infer and compare the specific X-ray luminosity distributions for a sample
of massive (i.e. $\log_{10} (M*/M\odot) > 10.5$) galaxies split according to
their far-infrared-derived star-forming properties (i.e., starburst and
non-starburst) and redshift. We model each distribution as a power-law with an
upper and lower turnover, and adopt a maximum likelihood method to include
information from non-detections in the form of upper limits. When we use our
inferred distributions to calculate the ratios of high to low sLx AGN
(corresponding to above and below $0.1\lambda_{\text{Edd}}$, respectively) we
find that starbursts have significantly higher proportions of high sLx AGN
compared to their non-starburst counterparts. These findings help explain the
increase in average X-ray luminosity in bins of increasing SFR reported by
previous studies.
