Fran is training for her first marathon, and she wants to know if there is a significant difference between the mean number of miles run each week by group runners and individual runners who The original answer was incorrect. Meaning, the null and alternate hypothesis were incorrect. The question mentioned that the alumni and supporters was considered cost effective if more than 15% of the alumni and supporters provided monetary contributions. This implies that the alternate hypothesis should be that p would be MORE than .15. The P-Value and Critical Value were also incorrect. are training for marathons. She interviews 32 randomly selected people who train in groups and finds that they run a mean of 49.0 miles per week. Assume that the population standard deviation from group runners is known to be 4.2 miles per week. She also interviews a random sample of 30 people who train on their own and finds that they run a mean of 47.2 miles per week. Assume that the population standard deviation for people who run by themselves is 4.8 miles per week. Test the claim at the 0.05 level of significance.