Baseball fans In a national poll taken in February 2008,Gallup asked 1006 adults whether they were baseballfans; 43% said they were. Two months previously, inDecember 2007, 40% of a similar-size sample hadreported being baseball fans.a) Find the margin of error for the 2008 poll if we want90% confidence in our estimate of the percent ofnational adults who are baseball fans.b) Explain what that margin of error means.c) If we wanted to be 99% confident, would the marginof error be larger or smaller? Explain.d) Find that margin of error.e) In general, if all other aspects of the situation remainthe same, will smaller margins of error produce greateror less confidence in the interval?

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A: Introduction There are 2 types sampling methods: Prob. methods Non-Prob. methods

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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.