Read the passage given below and answer the question number given below:

A study was conducted to find out the effects of meditation on the health of children who participated in a meditation activity. A group of children who had not participated in meditation before and were planning to participate in the meditation activity were given a health scale before the meditation activity. The children were to repeat the same test after 2 months of the meditation activity. Health was to be measured on an interval scale, with higher scores indicating higher health. The scores on the scale were normally distributed. The scores are given below.