11. If the calculated test statistic is x? = 24.48, at the 0.01 significance level we would (a) reject the null hypothesis and conclude there is sufficient evidence to conclude that there are differences in the means of the different populations. (b) reject the alternative hypothesis and conclude that there are no differences in the means of different populations (c) reject the alternative hypothesis and conclude that there is sufficient evidence to con- clude that there is insufficient evidence to suggest that there is any difference in lane traffic (d) reject the null hypothesis and conclude there is sufficient evidence to suggest that at least one lane has more or less traffic than the others