A soft drink company is conducting research to select a new design for their can. A sample of 9 participants has been selected. Instead of a typical taste test with two different sodas, they give each participant the same soda twice. One drink is served in a predominantly red can, the other in a predominantly blue can. The order the two cans are used is chosen randomly. Participants are asked to rate each drink on a scale of 1 to 10. The mean difference between the rating of the red and blue can for the 9 participants is -0.56 with standard deviation 2.19. Researchers would like to determine whether or not the mean difference in ratings between the red and blue can is 0.
Calculate the t-test statistic for this problem.
Round your final answer to 3 decimal places.
Test statistics
t = (d - d) / (Sd / sqrt(n) )
= ( -0.56 - 0) / (2.19 / sqrt(9) )
= -0.767
A soft drink company is conducting research to select a new design for their can. A...
A soft drink company is conducting research to select a new design for the can. The same drink is used, but is served in a red can and a blue can to each of the 16 participants. The participants are asked to rate each drink (red can and blue can) on a scale of 1 to 10. The difference between red and blue can ratings averaged - 1.125, with a standard deviation of 1.1475. Does this sample indicate that there...
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