Percentile Hypothesis Testing

Question:  For Dataset 2, which contains HCAHPS Summary data for October 2018, how would you test if there is a difference in mean values for “Nurse Communication” 
across high/medium/low categories of “Recommend Hospital?”

Define high/medium/low categories for “Recommend Hospital” using the 75th percentile as cutoff for high and the 50th percentile as cutoff for medium.
State your null and alternative hypotheses.
Run a test to accept or reject your hypothesis. 
State your test statistics and interpretation of results.