Question

The average healing time of a certain type of incision is 264 hours, with standard deviation of 30 hours. What percentage of the people having this incision would heal in 10 days or loss? Assume a normal distribution Click the icon to view the area under the standard nommal curve table of people having this incision should heal in 10 days or less (Type anger or decimal rounded to the newest hundredth as needed.)

Answer 1

Ô Here Given that Normal distribution XnN (264, 800) [:8² (30)² = goo so Var(x) = (30)2= soo x-4 WN(0, 1) x- 6 Er we know that z= १० 10 days = 9 10x zu= 240 hours. so P(X२५०) Plås X-4 a) = = Plas264 +240 во e plas-16) = plasa) I pa s-0.8) 3 0.21186 so an bercentage Oa186 X100 % - (11-34%