b) An engineer studying whether a downhill section of a highway needs to be widened, measures the speed of motorists travelling along the highway. A sample of 90 cars gives a mean speed of 110.2 km/h and a standard deviation of 6 km/h. (iv) 15 this (iii) an example of a false alarm? Note: -(if you think YES, this is an example of a false alarm, enter 1) -(if you think NO, this Is NOT an example of a false alarm, enter 0)