Question 42, A Gallup Poll showed that 30% of Americans are satisfied with the way things are going in the US. Suppose a sample of 20 Amserican is selected as part of the study of the state of the nation.                         Compute the probability that exactly 4 of the 20 Americans surveyed are satisfied with the way things are going in the United States                                                                                       Compute the probability that at leeast 2 of the Americans surveyed are satisfied with the way things are going in US.                                           Fro the sample of 20 Americans compute the expected number of Americans who are satisfied with the way things are going in US.                                            For the sample of 20 Americans, compute the variance and standard deviation of the number of Americans who are satisfied with the way things are going in the US.

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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.