To Compare the Effect of Weather on Sales of Soft

question 31

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 > 0.
iii. The z-statistic is 3.40.

• 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:

Photoreceptors

Photoreceptors are specialized cells in the retina that convert light into electrical signals, enabling the process of vision.

Cones

Photoreceptor cells in the retina of the eye that function best in bright light and enable color vision.

Dim Light

Low-intensity lighting that is not bright enough to cause full alertness and is commonly used in settings to promote relaxation.

Optic Disc

The point in the eye where the optic nerve fibers exit the retina, often referred to as the blind spot because it lacks light-sensitive cells.