When you collect offspring from the next generation in each stream, you find that guppies from stream A have the same mean number of spots that you estimated for their parents in the original sample that you released. You find the same thing for stream C. However, you find that offspring from stream B have a mean number of spots that is 0.2 standard deviations lower than the mean for their parents. Based on this information, what do you expect to find for the mean number of spots in the offspring from stream D?
The mean number of spots will decrease by 0.1 standard deviations
The mean number of spots will stay the same
The mean number of spots will increase by 0.2 standard deviations
The mean number of spots will increase by 0.1 standard deviations
The mean number of spots will increase by 0.25 standard deviations