Let z denotes the standard normal random variable. P(z 2 -1.26) is approximately O a. 0.8849 O b. 0.1038 O c. 0.8962 O d. 0.2600 The hip width x of adult females is normally distributed with mean 38.3 cm and standard deviation 4.31 cm. The minimum width of an aircraft seat that will accommodate 98% of all adult women is about O a. 40.5 cm O b. 42.6 cm O c. 47.2 cm O d. 48.0 cm