Atest for marijuana usage was tried on 200200 subjects who did not use marijuana. the test result was wrong 77 times. a. based on the available results, find the probability of a wrong test result for a person who does not use marijuana. b. is it "unlikely" for the test to be wrong for those not using marijuana? consider an event to be unlikely if its probability is less than or equal to 0.05.

Solve the problem by using a venn diagram a group of students were surveyed about their taste in music.they were asked how they like three types of music: rock, country western and jazz.the results are summarized below: no one dislikes all three types of music.six like all three types of music.eleven don’t like country western.sixteen like jazz.three like country western and jazz, but not rock.six don’t like rock.eight like rock and country western.seven don’t like jazz.how many students were surveyed?