TABLE 12-13 According to an Article in Marketing News, Fewer Checks Are

question 90

Multiple Choice

TABLE 12-13
According to an article in Marketing News, fewer checks are being written at grocery store checkout stands 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 12-13, what is the form of the null hypothesis?

• A) H₀ : π₁ = π₂ = π₃
• B) H₀ : π₁ = π₂ ≠ π₃
• C) H₀ : π₁ ≠ π₂ = π₃
• D) H₀ : π₁ ≠ π₂ ≠ π₃

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Definitions:

Range

The difference between the highest and lowest values in a dataset, providing a measure of the data's spread or variability.

Range

The difference between the highest and lowest values in a data set, indicating the spread of values.

Standard Deviation

A quantification method for assessing the spread or variability within a dataset.

Interquartile Range

A measure of variability, defined as the difference between the 75th and 25th percentiles of a data set.