Premise:
"N, the total number of LC50 values used in calculating the CV(%) varied with organism and toxicant because some data were rejected due to water hardness, lack of concentration measurements, and/or because some of the LC50s were not calculable."
Hypothesis: Most discarded data was rejected due to water hardness.

it is not possible to tell

Premise:
"This bustling capital deserves the necessary effort to get into its colorful past."
Hypothesis: It was originally established by the Spanish.

it is not possible to tell

Premise:
"Case study means different things to different methodologists, who reach different conclusions about how to do case studies, how to report them, and their overall appro-priateness for answering a specific question."
Hypothesis: Methodologists all have the same meaning for case studies.
no