E Test: Math 137 Midterm Exam F2021 Question 18 This test: 110 pts possible A jpurnal published a study of the lifestyles of visually impaired students. Using diaries, the students kept track of several variation, including number of hours of sierp attained in a typical dry. These visually impaired students had a mean of 9.38 hours and a standard deviation of 2.12 hours. Assume that the distribution of the number of hours of sleep for this group of students is approximately normal Complete parts a trough c. 1. Find P(x > 12) P(x> 12)= (Round to four decimal places as nesded.) b. Fir PO