Il. Determine it one-tailed test or two-tailed test fits the given hypothesis.


1. A researcher claims that the method of teaching affects learning.
2. The mean performance of all Grade 10 of a school in NAT is 46.
3. A farmer believes that using organic fertilizer on his plants will yield greater income.
4. The mean weight of Grade 11 students is less than 50 kilograms.
5. The mean grade of Grade 11 students in General Mathematics is lower than their mean
grade in Statistics.
6. A nutritionist claims that her developed bread is fortified with vitamin B.
7. A musician believes that listening to classical music affects mood.
8. A storekeeper thinks that the time of day influences sale of ice cream.
9. A mother wants to prove that reading books to children improves their thinking process.
10. A certain combination of fruits provides the daily requirement for vitamin C.​