Statistics: Computing Confidence Intervals – #167


Question: We are interested in comparing the avg. supermarket prices of two leading colas in the Tampa area. Our sample was taken by randomly going to each of eight supermarkets and recording the price of s-pack of cola of each brand. 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.

only-members
 

log in

reset password

Back to
log in