Chapter 19 M303 Final Exam

Data Analysis:
Two Key Considerations

ÊFrequency Analysis

Interval estimates are a projection of the
range within which a population parameter will lie at a given level of
confidence based on a statistic obtained from a probabilistic sample

ÊThis probability is normally referred
to as the confidence level

ÊDrawing a probability sample allows for
the appropriate calculation of confidence intervals

A statement
about the value of a population
parameter developed for the
purpose of testing

allows us to
calculate the probability of a particular result if the stated
hypothesis is actually accepted

ÊThe hypothesis that a
proposed result is not true for the population

ÊResearchers typically attempt to reject
the null hypothesis in favor of some alternative hypothesis

ÊThe hypothesis that a
proposed result is true for the population

ÊOften, we are interested in the
alternative hypothesis