Suppose the age that children learn to walk is normally distributed with mean 11 months and standard deviation 2.3 month. 33 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( 11 2.3 b. What is the distribution of a? N( 11 0.4004 c. What is the probability that one randomly selected person learned to walk when the person was between 10.6 and 11.2 months old? d. For the 33 people, find the probability that the average age that they learned to walk is between 10.6 and 11.2 months old. e. For part d), is the assumption that the distribution is normal necessary? O NoO Yes f. Find the 1QR for the average first time walking age for groups of 33 people. Q1 = months Q3 = months IQR: months Submit Question

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.