{"head":"c35ee1ddf58789df5662a626a4e94add3043d8d9","size":1,"push_id":44345047,"shas":[["c35ee1ddf58789df5662a626a4e94add3043d8d9","a6c5230a10c458028ff1bd5985dd47c394028d47@hughbien.com","z/t-statistics and hypothesis testing","Hugh Bien"]],"ref":"refs/heads/master"}