To Compare the Effect of Weather on Sales of Soft

question 19

Multiple Choice

To compare the effect of weather on sales of soft drinks, a soda manufacturer sampled two regions of the country with the following results. Is there a difference in sales between the 2 regions? i. The null hypothesis is pa - pb = 0
Ii) The alternate hypothesis is pa - pb ≠ 0
Iii) The proportion of sales made in Market Area 1 is 0.45.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) and (ii) are correct statements, but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (ii) is a correct statement, but not (i) and (iii).

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Definitions:

Nondirectional Research Hypothesis

A hypothesis suggesting a correlation between variables without defining the nature of their interaction.

Generalizability

The extent to which the findings from a study can be applied to a wider population or different contexts.

Null Hypothesis

A statement that asserts there is no effect or no difference, and it is the hypothesis that researchers aim to test against.

Directional Hypothesis

A hypothesis that specifies the direction of an anticipated difference or relationship between variables.