A continuous random variable X has a normal distribution with mean 50.5. The probability that X takes a value greater than 54 is 0.21. Use this information and the symmetry of the density function to...

A continuous random variable X has a normal distribution with mean 50.5. The probability that X takes a value greater than 54 is 0.21. Use this information and the symmetry of the density function to find the probability that X takes a value less than 47. Enter your answer as a number rounded to two decimal points, e.g. 0.29.