State the conclusion based on the results of the test.

According to the Federal Housing FinanceBoard, the mean price of asingle-family home two years ago was $299,300. A real estate broker believes that because of the recent creditcrunch, the mean price has decreased since then. The null hypothesis is rejected.

Choose the correct answer below.

A.

There is sufficient evidence to conclude that the mean price of asingle-family home has decreased from its level two years ago of $299,300.

B.

There is sufficient evidence to conclude that the mean price of asingle-family home has increased from its level two years ago of $299,300.

C.

There isnot sufficient evidence to conclude that the mean price of asingle-family home has increased from its level two years ago of $299,300.

D.

There isnot sufficient evidence to conclude that the mean price of asingle-family home has decreased from its level two years ago of $299,300.