The Average Customer Waiting Time at a Fast Food Restaurant

Multiple Choice

The average customer waiting time at a fast food restaurant has been 7.5 minutes.The customer waiting time has a normal distribution.The manager claims that the use of a new system will decrease average customer waiting time.What is the null and alternative hypothesis for this scenario?

A) H₀: μ = 7.5 and H_a ≠ 7.5
B) H₀: μ ≤ 7.5 and H_a > 7.5
C) H₀: μ ≥ 7.5 and H_a < 7.5
D) H₀: μ > 7.5 and H_a ≥ 7.5
E) H₀: μ > 7.5 and H_a ≤ 7.5