A local agricultural cooperative claims that 55% of about 60,000 adults in a county believe that gardening should be part of the school curriculum. However, when you take a simple random sample of 300 of the adults in the county, only 50% say that they believe that gardening should be part of the school curriculum. Assuming that the agricultural cooperative's claim is accurate, what is the approximate probability that less than 50% of the sample would say that they believe that gardening should be part of the school curriculum?