A loan officer at a bank maintains that the median credit rating of its customers pursuing a mortgage loan is at least 695.

• A loan officer at a bank maintains that the median credit rating of its customers pursuing a mortgage loan is at least 695. The credit scores for 20 randomly selected mortgage loan customers is listed below. At .05 can you reject the loan officer’s claim?

617      695      706      631      711      625      653      612      707     

719      605      619      621      699      644      665      697      609

687      711