Answer: 2. H0: μ = 40 vs. H1: μ < 40
Step-by-step explanation:
- Null hypothesis : It is a statement about population parameter by concerning the specific idea. It contains ≤,≥ and = signs
- Alternative hypothesis : It is a statement about population parameter but against null hypothesis. It contains < , > and ≠ signs.
Let be the average number of tissues a person uses during the course of a cold.
Given : Researchers claim that 40 tissues is the average number of tissues a person uses during the course of a cold.
i.e.
The company who makes Puffs brand tissues thinks that fewer of their tissues are needed.
i.e.
Thus , the set of hypothesis would be :-
Thus , the correct answer is option 2. H0: μ = 40 vs. H1: μ < 40