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:

Human Diversity

The range of differences among humans, including but not limited to race, ethnicity, gender, age, sexual orientation, and disability.

Genes

Units of heredity made up of DNA that act as instructions to make molecules called proteins, influencing individual traits.

Nativists

Scholars who argue that certain skills or abilities are innate and hard-wired into the brain at birth.

Nature

The phenomena of the physical world collectively, including plants, animals, the landscape, and other features and products of the earth, as opposed to humans or human creations.