The reaction time to a certain psychological experiment is considered to be normally distributed with a mean of 2020 seconds and a standard deviation of 44 seconds. (a) What proportion of subjects take longer than 3030 seconds to react? (b) What is the reaction time such that only 10 %10 % of subjects are faster than this time?

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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.