A gym advertises that its 1{,}0001,0001, comma, 000 members, on average, lost 5 \text{ kg}5 kg5, start text, space, k, g, end text in their first month of membership. A skeptical employee suspects that the actual average is lower than this, so they take an SRS of 101010 customers and look at each of their weight losses in their first month of membership. The sample data is skewed to the right with an average weight loss of 4.25 \text{ kg}4.25 kg4, point, 25, start text, space, k, g, end text and a standard deviation of about 3 \text{ kg}3 kg3, start text, space, k, g, end text. The employee wants to use these sample data to conduct a ttt test about the mean. Which conditions for performing this type of significance test have been met