Researchers Claim That 40 Tissues Is the Average Number of Tissues

Multiple Choice

Researchers claim that 40 tissues is the average number of tissues a person uses during the course of a cold.The company who makes Puffs brand tissues thinks that fewer of their tissues are needed.What are their null and alternative hypotheses?

A) H₀: $\mu$ = 40 vs.H₁: $\mu$ $\gt$ 40
B) H₀: $\mu$ = 40 vs.H₁: $\mu$$\lt$ 40
C) H₀:=40 vs.H₁: $\lt$ 40
D) H₀: $\mu$ $\lt$ 40 vs.H₁: $\mu$ = 40