Show transcribed image text Part B takes 70 messurements of speed on a roadway segment. The he freeway is knoun to be Question 1: A traffic engineer measurements of sample mean is 40 mph. The popelation distribation of speeds on the freeway is knowrn to be normally distributed with standard driation of 10 mph. Determine the 90 % confidence interval for speed?
Part B takes 70 messurements of speed on a roadway segment. The he freeway is knoun to be Question 1: A traffic engineer measurements of sample mean is 40 mph. The popelation distribation of speeds on the freeway is knowrn to be normally distributed with standard driation of 10 mph. Determine the 90 % confidence interval for speed?
