We are interested in comparing the average supermarket prices of two leading colas. Our sample was taken by randomly selecting eight supermarkets and recording the price of a six-pack of each
Brand of cola at each supermarket. The data are shown in the following table:

Find a $98 \%$ confidence interval for the difference in mean price of brand 1 and brand 2 .
A) $0.0375 \pm 0.0471$
B) $0.0375 \pm 0.0347$
C) $0.0375 \pm 0.1393$
D) $0.0375 \pm 0.0404$

Question

We are interested in comparing the average supermarket prices of two leading colas. Our sample was taken by randomly selecting eight supermarkets and recording the price of a six-pack of each
Brand of cola at each supermarket. The data are shown in the following table:

Find a $98 \%$ confidence interval for the difference in mean price of brand 1 and brand 2 .
A) $0.0375 \pm 0.0471$ 
B) $0.0375 \pm 0.0347$ 
C) $0.0375 \pm 0.1393$ 
D) $0.0375 \pm 0.0404$

Quizplus · Accepted Answer

The Answer of We are interested in comparing the average supermarket prices of two leading colas. Our sample was taken by randomly selecting eight supermarkets and recording the price of a six-pack of each
Brand of cola at each supermarket. The data are shown in the following table:

Find a $98 \%$ confidence interval for the difference in mean price of brand 1 and brand 2 .
A) $0.0375 \pm 0.0471$ 
B) $0.0375 \pm 0.0347$ 
C) $0.0375 \pm 0.1393$ 
D) $0.0375 \pm 0.0404$

We Are Interested in Comparing the Average Supermarket Prices of Two