Based on records in the past 5 academic years, the sophomore biology class has a mean score of 75. The instructor thinks that students who attend morning classes have higher score in the said subject....

Based on records in the past 5 academic years, the sophomore biology class has a mean score of 75. The instructor thinks that students who attend morning classes have higher score in the said subject. His early morning class in the current year can be a sample of all students who took morning classes in Biology subject. What is the null and alternative hypothesis?