(Solved): A pharmaceutical company sells a tablet for treating colds. After extensive experimentation, resea ...

A pharmaceutical company sells a tablet for treating colds. After extensive experimentation, researchers at the pharmaceutical company have developed a new formula for the tablet. The researchers suspect that the mean recovery time of all patients treated with the old tablet is more than the mean recovery time of all patients who are treated with the new tablet. To see if this is true, a random selection of volunteers were exposed to a typical cold virus, After they started to have cold symptoms, 25 of them were given the old tablet. The remaining 25 volunteers were given the new tablet. For each individual, the length of time taken to recover from the cold was recorded. At the end of the experiment the following data were obtained. \table[[,Dya to recover from a cold],[Treated with cla tablet,