For a large population, the probability of a random variable falls below u - 2 o is: 0. 035 30. 05 O0. 025 O0. 25Suppose X is normally distributed with mean 5. If P(X E 6) = 0. 6700 what is the approximate value of the standard deviation of X ? 02.27 027.3 0 32. 5% 00.44 Let x be a normal random variable with a mean 01' 50 and a standard dewatlon or 3. A z score was calculated tor x, and the z score is 1. 25. What Is the value or x! O 53. 25 O 53. 75 O 46. 25 046.4 Suppose Xis normally distributed with mean 5 and standard deviation 0. 4 _ We find P[X 'C X0) : P(Z S 1. 3) . What is the value of X0? 05.52 00.52 05.25 O 55. 2%