2. to determine if the type of agar affects bacterial growth, a scientist cultures e. coli on four different types of agar. five petri dishes are set up to collect results: • one with nutrient agar and e. coli • one with mannitol-salt agar and e. coli • one with macconkey agar and e. coli • one with lb agar and e. coli • one with nutrient agar but no e. coli all of the petri dishes received the same volume of agar, and were the same shape and size. during the experiment, the temperature at which the petri dishes were stored, and at the air quality remained the same. after one week the amount of bacterial growth was measured.

Ali hypothesized that increasing fertilizer would increase plant growth. four groups of thirty similar plants were given 0 to 15 ml of fertilizer, as shown in the graph. the change in plant height for each group over a two-week period was averaged and recorded. plant group fertilizer added (ml) avg. growth (cm) a 0 4 b 5 6 c 10 8 d 15 3 what is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.