Question [3]: Extensive data, including that the number of activities per week can be modeled as a normal distribution with mean 2 and standard deviation 0.64 . (a) If a random sample of size 16 is selected, what is the probability that the sample mean will lie between 1.2 and 2.8 ? (b) With a sample size of 25 , what is the probability that the sample mean will lie between 1.2 and 2.8 ?

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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.