i need help finding the upper and lower control limit of both 4 and 3 !

Rosters Chicken advertises "lite" chicken with 30% fewer calories than standard chicken. When the process for "Vte" chicken breast production is in controk, the avarage chicken breast contains 420 calones, and the standard deviation in calonc comtent of the chicken breast populetion is 30 calories. Rosters wants to desion an xichart to montor the calone consent of chicken breasts, where 25 chicken breasts would be chosen at random to form each sample. a) What are the lower and upper control timis for this chart if these imts are chosen to be four standard deviabons from the target? Upper Controi Limit (UCL, L)= calones ienter your rusponse as an integer)