In order to determine a significant difference between the two groups, we need to consider the spread of the data on the dot plot. If the range of the mean differences between the two groups is consistently above zero and does not overlap with zero, then it would be considered significant and show that the treatment helped increase plant growth.
For example, if the mean differences range from 2 to 10, with all data points falling above 0, then this range of differences would be considered significant and indicate that the new fertilizer treatment helped improve plant growth. Conversely, if the mean differences range from -3 to 3, with data points scattered around 0, then the treatment may not have had a significant effect on plant growth.
A new fertilizer is being used to improve plant growth. In a two-group experiment, one group received regular fertilizer and the other received new fertilizer for improved plant growth. The dot plot represents the mean differences between the two treatment groups. What range of differences would be considered significant and show that the treatment helped increase plant growth? (1 point)
1 answer