(08.05 MC) A restaurant manager gives a survey to all of his…

(08.05 MC) A restаurаnt mаnager gives a survey tо all оf his custоmers asking them to rate the quality of the service they received. He then keeps track of how many customers return to the restaurant during the next six months. Last year, the results showed that of the customers who reported high quality service, 90% returned for additional meals. What conclusion can be drawn from this study?