Suppose the age that children learn to walk is normally distributed with mean 12 months and standard deviation 2.1 month. 34 randomly selected people were asked what age they learned to walk. Round all answers to 4 decimal places where possible. b. What is the distribution of ¯ x x¯ ? ¯ x x¯ ~ N(?) (?) c. What is the probability that one randomly selected person learned to walk when the person was between 11.6 and 12.1 months old?  d. For the 34 people, find the probability that the average age that they learned to walk is between 11.6 and 12.1 months old?

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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.