16. In previous year, the marks obtained in a French test by modelled satisfactorily by normal distribution with a mean more than 65.In order to investigate this suspicious, the teacher selected a random sample of 35 students to take the French test and found that their mean score is 62.5 with population standard deviation of 9. Test at the 0.05 significance level if the mean marks obtained in a French test is more than 65. i. State the null and alternative hypotheses. Find the critical value. Calculate the test statistic. ii. iii. iv. State the decision and conclusion.