Operations Management help needed. please check your work, provide explanation if possible. if it's right I'll give you a like.

An amusement park is trying to predict how many customers will have mild to severe reactions to a new water ride. While testing the ride on park employees willing to ride it, they measured for a 1-hour interval three times each day for seven days the number of people who claim to, at the very least, feel a little nausea after the ride. They are interested in what is the highest and lowest number they should expect in a busy hour so they can change the amount of turbulence generated by the water pumps if conditions change. Given the information in the table, what is the lower control limit for the appropriate control chart? (Round your answer to the nearest decimal.)