Two hospital emergency rooms use different procedures for triage of their patients.We want to test the claim that the mean waiting time of patients is the same for both hospitals.The 40 randomly selected subjects from one hospital produce a mean of 18.3 minutes.The 50 randomly selected patients from the other hospital produce a mean of 25.31 minutes.Assume a $\sigma$_a = 2.1 minutes and $\sigma$_b = 2.92 minutes.Setup the null hypothesis to determine if there is a difference in the mean waiting time between the two hospitals. A)µ_a - µ_b = 0 B)µ_a - µ_b $\neq$ 0 C)µ_a - µ_b 0 D)µ_a - µ_b

Question

Two hospital emergency rooms use different procedures for triage of their patients.We want to test the claim that the mean waiting time of patients is the same for both hospitals.The 40 randomly selected subjects from one hospital produce a mean of 18.3 minutes.The 50 randomly selected patients from the other hospital produce a mean of 25.31 minutes.Assume a $\sigma$_a = 2.1 minutes and $\sigma$_b = 2.92 minutes.Setup the null hypothesis to determine if there is a difference in the mean waiting time between the two hospitals. A)µ_a - µ_b = 0 B)µ_a - µ_b $\neq$ 0 C)µ_a - µ_b > 0 D)µ_a - µ_b < 0

Quizplus · Accepted Answer

The null hypothesis is that there is no difference in the mean waiting times between the two hospitals, which is represented by µ_a - µ_b = 0.

Two Hospital Emergency Rooms Use Different Procedures for Triage of Their