Area under the normal curve between 1.84 and 2.72 = = (area under the normal curve between 0 2.72 = to =) (area under the normal curve between = 0 to = 1.84)
Area under the normal curve between a = 2.72 and 1.84. = (area under the normal curve between a = 2.72 to = 0). (area under the normal curve between = 0 and = 1.84). = 0.4967 + 0.4671 = 0.9638 = 96.38%.
area under the normal curve between = and 2.72 1.84 = (area under the normal curve between = 2.72 to = 0) (area under the curve normal between = = 0 to 1.84)