Fran is training for her first marathon she wants to know if there is a significant difference between the main number of miles run each week by group runners and individual runners who are training for marathons she interviews 32 randomly selected people who train in groups and finds that they run it mean a four-point And mean of 49.0 miles per week assume that the population standard deviation from the 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 the population standard deviation for the people who run by themselves is 4.8 miles per week test the claim at a 0.05 level of significance what is the hypothesis what is the alternative hypothesis what is the T statistic what are the critical values what is the P value and what is the conclusion