For number 6. Identify whether the problem is a two-tailed test or one-tailed test (left-tailed test, right-tailed test). Then, formulate the null and alternative hypotheses. 6. A teacher believes...

pls answer number 6. On the hypothesis pls do in mathematical words and numbers, thank you!

Extracted text: For number 6. Identify whether the problem is a two-tailed test or one-tailed test (left-tailed test, right-tailed test). Then, formulate the null and alternative hypotheses. 6. A teacher believes that 85% of students in his class will have a grade of 90 in their Statistics subject. Due to pandemic, the students were introduced to another mode of learning which is through virtual classes. State the null and alternative hypotheses of the students having a grade of 90 despites the adjustments they've encountered.