A was asked to test the of a new vitamin for rats. His hypothesis was that young rats that had vitamins added to their food would gain weight faster than young rats fed a normal diet. He predicted that if young rats were fed vitamins, then they would gain more weight by the end of the experimentHe tested the effect of adding vitamins to some of the rats' diet by measuring the amount of weight each rat gained after three months He then determined the average gained in each . To analyze resultshe put the data he collected into the table shown below. What did the results of the experience show ??