The Average Household Size in the US in 2012 Was

Multiple Choice

The average household size in the US in 2012 was 2.55 persons (Source: US Census Bureau) .In order to test for a change in the average size of a household, the correct null and alternative hypothesis would be:

A) H₀: µ > 2.55 persons (The average household size is greater than 2.5 persons.)
H_a: µ ≤ 2.55 persons (The average household size is no more than 2.55 persons.)
B) H₀: µ = 2.55 persons (The average household size is 2.55 persons.)
H_a: µ ≠ 2.55 persons (The average household size is not 2.55 persons.)
C) H₀: µ ≠ 2.55 persons (The average household size is not 2.55 persons.)
H_a: µ = 2.55 persons (The average household size is 2.55 persons.)
D) H₀: µ ≤ 2.55 persons (The average household size is no more than 2.55 persons.)
H_a: µ > 2.55 persons (The average household size is greater than 2.55 persons.)
E) H₀: µ < 2.55 persons (The average household size is less than 2.55 persons.)
H_a: µ > 2.55 persons (The average household size is greater than 2.55 persons.)