State the conclusion based on the results of the test According to the Federal Housing Finance Board the mean price of a single family home two years ago was 299 200 A real estate broker believes that because of the recent credit crunch the mean price has decreased since then The null hypothesis is not rejected Choose the correct answer below OA There is not sufficient evidence to conclude that the mean price of a single family home has increased from its level two years ago of 299 200 OB There is not sufficient evidence to conclude that the mean price of a single family home has decreased from its level two years ago of 299 200 OC There is sufficient evidence to conclude that the mean price of a single family home has increased from its level two years ago of 299 200 OD There is sufficient evidence to conclude that the mean price of a single family home has decreased from its level two years ago of 299 200