Deaths caused by speeding on highway. The number of deaths caused by speeding on highways is increasing. A study shows that road accidents killed 12,500 people in a year in the United Kingdom. A traffic commissioner wants to know the proportion of deaths caused by speeding. He selects a random sample of 1500 people killed in highway accidents and finds that 45% of these were caused in speeding- related accidents. a. Describe the population being investigated by the traffic commissioner. b. In constructing a confidence interval to estimate the proportion of deaths in an accident caused due to speeding, is it necessary to use the finite population correction factor? Explain. c. What estimate of the standard error of]?I should be used in constructing the confidence interval of part b? d. Construct a 90% confidence interval for the true proportion and interpret it in the context of the