In a city where 30% occupants are foreign, the probability of a foreign being questioned is 40%, while for a local is 10%. What is the likelihood that any person chosen at random will be questioned.
Need to know the test that will be performed on the following question:
The data comprises hours devoted to patient care per week for practitioners in conventional and alternative medical practices.
Question:
Can we infer that the mean amount of time devoted to patient care per week by...