Ramp metering is a traffic engineering idea that requires cars entering a freeway to stop for a certain period of time before joining the traffic flow. The theory is that ramp c the number of cars on the freeway and the number of cars accessing the freeway, resulting in a freer flow of cars, which ultimately results in faster travel times. To test whether ramp metering is effective in reducing travel times, engineers conducted an experiment in which a section of freeway had ramp meters installed on the on-ramps. The response variable for the Study was speed of the vehicles. A random sample of 15 cars on the highway for a Monday at 6p.m. with the ramp meters on and a second random sample of 15 cars on a different Monday at 6 p.m. with the meters off resulted in the following speeds (in miles per hour). Ramp meters on: 27, 49, 55, 38, 30, 24, 44, 46, 50, 34, 54, 39, 41, 27, 46 Ramp meters off: 25, 25, 42, 34, 38, 31, 48, 38, 17, 28, 22, 40, 37, 50, 41 25 Are the ramp meters effective in maintaining a higher speed on the freeway? Use the =0.01 level of significance. State the null and alternative hypotheses. 26. Determine the P-value for this test. 27. State the conclusion of the test