Suppose we are comparing the average daily exercise minutes for individuals in three different age groups. Independent random samples of size $6$ were taken from each age group. The computed test statistic is $F=25.77$ for testing whether the mean daily exercise minutes differ among the three groups. Assume normality of the populations and equal population variances. Use a significance level of $\alpha =0.10$. What conclusion can be drawn about the mean daily exercise minutes across the groups?