To Compare the Effect of Weather on Sales of Soft $\neq$

question 11

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 p_a - p_b > 0.
ii. The alternate hypothesis is p_a - p_b $\neq$ 0.
iii. The pooled estimate of the population proportion is 0.36.

• 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:

Mental Age

A measure of an individual's mental attainment based on the age at which an average individual achieves a particular score on a test of intelligence or aptitude.

Chronological Age

The age of an individual or object expressed as the amount of time since their date of birth or creation.

Growth Mind-Set

The belief that abilities and intelligence can be developed through dedication and hard work.

Robert Sternberg

An American psychologist known for his theory on intelligence and creativity, which includes the triarchic theory of intelligence.