1.IQ: Scores on a certain IQ test are known to have a mean of100.A random sample of77students attends a series of coaching classes before taking the test. Let be the population mean IQ score that would occur if every student took the coaching classes. The classes are successful if> 100.A test is made of the hypotheses=Ho: u=100 versus H1: u> 100.Consider three possible conclusions: (i) The classes are successful. (ii) The classes are not successful. (iii) The classes might not be successful.