Explanation not necessary. I would like to check my answers against those of an expert. I am getting a different result (value) each time I re-do the calculation.

Question 1:

Suppose the age that children learn to walk is normally distributed with mean 11 months and standard deviation 1 month. 10 randomly selected people were asked what age they learned to walk. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X N([:,[:]) b. What is the distribution of 5? a": - N(:],:]) c. What is the probability that one randomly selected person learned to walk when the person was between 10.5 and 12 months old? [:] d. For the 10 people, find the probability that the average age that they learned to walk is between 10.5 and 12 months old. C] For part d), is the assumption that the distribution is normal necessary? Yes\" No Find the IQR for the average first time walking age for groups of 10 people.