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

question 44

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 p_a - p_b $\neq$ 0.
ii. Using the 1% level of significance, the critical value is $\pm$ 2.58.
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:

Quiet Child

Refers to a child who exhibits introverted or less vocal behavior compared to peers, often observing rather than engaging in social interactions.

Difficult

Requiring substantial effort or skill to do, understand, or deal with.

Securely Attached

Refers to individuals who have formed healthy and trusting relationships as a result of receiving consistent care and support in early childhood.

Easily Soothed

Refers to the ability to be calmed or comforted with minimal effort.