TABLE 12-6
According to an article in Marketing News, fewer checks are being written at the grocery store checkout than in the past. To determine whether there is a difference in the proportion of shoppers who pay by check among three consecutive years at a 0.05 level of significance, the results of a survey of 500 shoppers in three consecutive years are obtained and presented below.
-Referring to Table 12-6, what is the form of the alternative hypothesis?
Definitions:
Confidence Interval
A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter, expressed at a certain confidence level.
Dependent Variable
A variable in statistical analysis that is influenced or predicted by another variable.
Exposure
The condition of being subjected to something, such as light, chemicals, or experiences, which may have an effect or influence.
Mortality Rates
Statistical measures of the number of deaths in a specified population, within a certain period of time.
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