Question: A city engineer claims that the average wait time at a certain traffic light is less than 45 seconds. To test this claim, an auditor

A city engineer claims that the average wait time at a certain traffic light is less than 45 seconds. To test this claim, an auditor collects random wait time data for the traffic light and conducts a hypothesis test at significance level 0.05. A summary of the test is below. Ho: H 2 45 H1: < 45 (claim) n = 28 X = 41 S = 17 P = 0.1119 Fail to reject Ho Using the results of the hypothesis test, choose the correct interpretation regarding the engineer's claim. The data indicate that the average wait time at the traffic light is significantly lower than 45 seconds. The engineer is likely correct. The data indicate that the average wait time at the traffic light is lower than 45 seconds, but the sample size is not large enough to draw a conclusion. We do not know whether the engineer is correct. The data indicate that the average wait time at the traffic light is lower than 45 seconds, but not significantly so. We do not know whether the engineer is correct. The data indicate that the average wait time at the traffic light is in fact higher than 45 seconds. The engineer is likely incorrect

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!