Ms. Alice Wonderland is one of the best employees of Honda. She is learning statistical process control. Her assignment is to find the best possible speed of closing the doors of Honda Civic Honda to meet specific industry requirement of 1.3. You will assist her to do the statistical process control.

Ms. Wonderland has a mean of 0.75 km/her from the 10 observations she had on closing the doors of Honda Civic with a standard deviation of 0.11 km/hr. She also finds out from a recent survey that people who bought the car said that their children cannot close the doors of Civic more than 0.5 km/hr while the parents do not want to close the doors more than 1.0 km/hr.

a. Verify whether the door closing of Honda Civic falls under the industry requirements.

b. If the standard deviation is reduced to 0.06 km/hr, does it make any difference? In what way and why?