For #22-24 The distribution of the number of hours worked by volunteers last month at a large hospital is approximately normal with mean 80 and standard deviation 7. 22. Find the probability that a randomly selected volunteer worked less than 75 hours last month. (A) 0.2375 (B) 0.4751 (C) 0.5249 (D) 0.7625 23. Find the probability that a randomly selected volunteer worked more than 90 hours last month. (A) 0.9234 (B) 0.07656 (C) 0.1531 (D) 0.8469 24. Find the probability that a randomly selected volunteer worked between 73 and 87 hours last month. (A) 0.15 (B) 0.16 (C) 0.32 (D) 0.68