In a random sample of 30 students at a high school, the mean score on a standardized test is 1514. Given that the standard deviation of all scores at the school is 141, find a 95% confidence interval and margin of error for the mean score among all students at the school. (Select all that apply)

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.