To Compare the Effect of Weather on Sales of Soft

question 86

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 alternate hypothesis is pa - pb ≠ 0
Ii) Using the 1% level of significance, the critical value is ±2.58.
Iii) The z-statistic is 3.57.

• 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:

Unpleasant Emotions

Feelings that are typically described as negative such as sadness, anger, fear, or disgust, which are often a response to undesirable experiences or thoughts.

Standardized Test

A test designed to be administered and scored in a consistent, or "standard," manner, widely used to compare the abilities or knowledge of individuals across various domains.

Known Distribution

A statistical term referring to a distribution whose properties (such as mean and variance) are known.

Correlation

An indicator that measures the level at which several variables co-vary.