Q1 :

(Part A) : a new anti flue vaccine designed to reduce the duration of Symptoms has been developed. However the effect of the drug varies to person to person to examine the affect of age on the effectiveness of the drug, a sample of 140 flue suffers was drawn. each person reported how long the symptoms of the flue persisted and his or her age. do this Data provide sufficient evidence to infer that the older the patient the longer it takes for the symptoms to disappear?

(Part B) : the feasibility of constructing a profitable electricity producing windmill depends on the mean velocity of the wind. for a certain type of windmill, the mean would have to exceed 20 miles per hours to warrant its construction. The determination of sites feasibility is a 2 stage process . in the first stage, readings of the wind velocity are taken and the mean is calculated. the last is design the question, "is the site feasible" ? in other words, is there sufficient evidence to conclude that the mean wind velocity exceed 20 MPH ? There is enough evidence, the site is removed from consideration. discuss the consequences and potential costs of type 1 and type 2 errors.