real estate broker believes that because of the recent credit crunch, the mean price has increased since then. The null hypothesis is not rejected. 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 $299.600There is pot . 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 $299,600 IS Sufficient evidence to conclude that the mean price of a single-family home has decreased from its level two years ago of $299,600.1. There is sufficient evidence to conclude that the mean price of a single-family home has increased from its level two years ago of $299,600.
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