D Question 16 L PLS A researcher at BYU-I was interested in finding out the average number of hours students sleep each day. She selects a random sample of 200 students and sends out a survey asking them how many hours they sleep each day. From those observations, she finds that the average number of hours of sleep is about 6.2 hours. Is the number 6.2 a statistic or a parameter? O Parameter since it describes the entire population O Parameter since it describes the sample O Statistic since it describes the entire population O Statistic since it describes the sample