Random variable X is normally distributed, with a mean of 25 and a standard deviation of 4. Which of the following is the approximate interquartile range for this distribution?
(A)25.00 – 22.30 = 2.70 (B)27.70 – 22.30 = 5.40 (C)27.70 ÷ 22.30 = 1.24 (D)2.00(4.00) = 8.00
B