Evolutionary theories often emphasize that humans have adapted to their physical environment. one such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and wakingdash–even if they are not exposed to the usual pattern of sunlight. to test this notion, eight paid volunteers were placed (individually) in a room in which there was no light from the outside and no clocks or other indications of time. after a month in the room, each individual tended to develop a steady cycle. their cycles at the end of the study were 2424, 2727, 2525, 2323, 2525, 2525, 2727, and 2424 . using the 0.05 level of significance, what should be concluded about the theory that 24 hours is the natural cycle? complete parts (a) through (c) below.