5. A random sample of 168 students was asked how many songs were downloaded on their phone and what fraction of them was legally purchased. Overall, they reported having a total of 117,079 songs, of which 23.1% were legal. The music industry would like a good estimate of the proportion of songs students have downloaded that are legal a. What is the parameter being estimated (describe in words and write the appropriate symbol? What is the population (describe in words)? What is the sample size? b. Construct a 95% confidence interval for the fraction of songs legally downloaded. c. Explain what this interval means. d. Do you believe that you can be this confident about your result? Why or why not