Researchers asked high school students if they previously had musical training andthen administered an intelligence (IQ) test to each student the same day. Students whohad musical training scored higher on the intelligence test than did students who had nomusical training. The researchers conclude that giving children musical training willcause an increase in intelligence.Taking into account the nature of the design and results obtained, what is the bestdescription of their conclusion?
Their conclusion is correct because they manipulated intelligence properly
Their conclusion is basically incorrect because they cannot infer causation using thismethod
Their conclusion is basically correct because music and intelligence are related in theexpected way
Their conclusion is basically incorrect because they divided people into groups basedon musical experience