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. The pooled estimate of the population proportion is 0.36.
iii. Using the 1% level of signiﬁcance, the critical value is ±1.96.
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).

Question

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. The pooled estimate of the population proportion is 0.36.
iii. Using the 1% level of signiﬁcance, the critical value is ±1.96.
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).

Quizplus · Accepted Answer

(i) and (ii) are correct statements but (iii).

To Compare the Effect of Weather on Sales of Soft