Bill has implemented his strategic communication plan. He has started getting in data from his benchmarks. He wants to increase the average reading level by one grade level within Jefferson Elementary School. The average reading level was 2.9 before the strategic communication plan started. After three months, the average reading level has increased to 3.4. While this score is close to the benchmark, Bill wants to know if the change is as large as it looks. Bill runs a t-test, which returns the following values: t=2.38 df=344 p=0.02. What can Bill conclude from this information