I need help on these hw questions can someone help me

here is a sc on them

Statistical procedures aid the business decision maker: O a. in making decisions in situations where uncertainty exists. O b. in making decisions in situations where there is no uncertainty. O C. because they can be manipulated to show that his/her gut feelings are always correct. O d. because they greatly reduce the amount of effort required to reach a decision in any instance where a decision must be made. O e. in eliminating uncertainty.The probability distribution for z is often called the standard normal distribution because it's: 0 3- mean and standard deviation are 0. O [3- mean and standard deviation are 1. O 13- mean is U and standard deviation is 1. Q {1- mean is 1 and standard deviation is D. O 3- mean is U and variance is 0.1. Suppose that z is a standard normal random variable. What is the probability that z lies between 0 and 2? O a. 0.95. O b. 0.475. O C. 0.34. O d. 0.4772. O e. 0.68