(b) The paper also gave the following sample statistics for the percentage of study time that occurred in the 24 hours prior to the exam. n- 451 X- 43.38 s- 21.56 Construct a 90% confidence interval for the mean percentage of study time that occurs in the 24 hours prior to the exam. (Round your answers to three decimal places.) (5.47 8.81 Interpret the interval. O We are confident that the mean percent study time that occurs in the 24 hours prior to the exam for all students taking introductory psychology at this university is within this interval at least 90% of the time. • we are 90% confident that the mean percent of study time that occurs in the 24 hours prior to the exam for all students taking introductory psychology at this university is within this interval. O we are confident that 90% of the mean percent of study time that occurs in the 24 hours prior to the exam for all students taking introductory psychology at this university is within this interval. O we are 90% confident that the mean percent of study time for all students taking introductory psychology is within this interval. You ma appropriate table in Appendix A to answer this question.