Use α = 0.05 to test whether the mean percentage of 17- to 24-year-olds who are attending college is the same for the four geographic regions. state the null and alternative hypotheses. h0: μn = μm = μs = μw ha: μn ≠ μm ≠ μs ≠ μw h0: μn = μm = μs = μw ha: not all the population means are equal. h0: at least two of the population means are equal. ha: at least two of the population means are different. h0: μn ≠ μm ≠ μs ≠ μw ha: μn = μm = μs = μw h0: not all the population means are equal. ha: μn = μm = μs = μw