According to the Census Bureau 326 people reside in the typi

According to the Census Bureau, 3.26 people reside in the typical American household. A sample of 26 households in Arizona retirement communities showed the mean number of residents per household was 2.89 residents. The standard deviation of this sample was 1.25 residents. At the .05 significance level, is it reasonable to conclude the mean number of residents in the retirement community household is less than 3.26 persons?

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