The Metra Train Company was interested in knowing the educational background of its customers. The company contracted a marketing firm to conduct a survey with a random sample of 50 commuters at the...

The Metra Train Company was interested in knowing the educational background of its customers. The company contracted a marketing firm to conduct a survey with a random sample of 50 commuters at the train station. In the survey, commuters were asked to disclose their educational attainment. The results shown were obtained.