From a Random Sample Drawn from the Suburbs of a Large

Multiple Choice

From a random sample drawn from the suburbs of a large city, 60% of the respondents are bilingual. For the whole metropolitan area, 75% are bilingual. The difference between the sample and the population has been tested and the null hypothesis has been rejected. Which of the following may be concluded from these observations?

A) that the suburbs are significantly less likely to be bilingual
B) that the difference is not significant
C) that a one-tailed test has been used
D) that a Type I error has been committed