Based on your knowledge of electrophilic aromatic substitution,predict the position of attack of an electrophile on pyridine,i.e. ,does the electrophile E+ attack carbon 2,3,or 4? Explain your answer. 
Which substitution product(s)forms and why?
Definitions:
Sampled Population
The subset of a larger population that is selected for the purpose of a scientific study or statistical analysis.
Degrees Of Freedom
A concept in statistics referring to the number of independent values or quantities which can vary in the computation of a statistic, often related to the number of observations in a sample minus the number of restrictions or parameters.
T-Distribution
A type of probability distribution that is symmetric and bell-shaped, used in statistics for small sample sizes when the population variance is unknown.
Confidence Interval
A scope of values, derived through sample statistical methods, seen as likely to include the value of an unascertained population parameter.
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