Question

B. State the null hypothesis and the alternative hypothesis in (a) words and in (b) symbols for each of the following:

1. The average age of Youtube users is 25.

(a) In words = Ho: __________ Ha: __________

(b) In symbols = Ho: __________ Ha: __________

2. The mean age of the grade 10 students enrolled in Marawi High School is 16 years old. (a) In words = Ho: __________ Ha: __________

(b) In symbols = Ho: __________ Ha: __________

Answer 1

1.

(a) In words

Ho: The average age of Youtube users is 25.

Ha: The average age of Youtube users is not 25

(b) In symbols

Ho: $\mu=25$

Ha: $\mu\not=25$

2.

(a) In words

Ho: The mean age of the grade 10 students enrolled in Marawi High School is 16 years old.

Ha: The mean age of the grade 10 students enrolled in Marawi High School is not 16 years old.

(b) In symbols

Ho: $\mu=16$

Ha: $\mu\not=16$