Chapter 6CONFIDENCE INTERVALS
As pointed out in the previous chapters, the sample mean, 
, estimates the population mean 
, but typically the estimate will not be exactly correct. That is, it is generally the case that 
. Consequently, a fundamental goal is determining what values for the population mean are reasonable based on the available data. In a similar manner, 
, the proportion of successes among 
observations, estimates the true probability of success 
associated with a binomial distribution, but generally 
. Based on data, how might we determine a range of values that is likely to contain the true value of 
? For example, imagine that based on 100 observations . Is it reasonable to conclude ...
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