A researcher asked participants to rate the softness of two well-known brands of tissue paper-Daisy and Flora. Daisy was rated softer than Flora with mean ratings of 5.50 and 3.25 respectively. This difference was statistically significant at the .05 probability level. The null hypothesis for the population suggests that:
A)Daisy is softer than Flora.
B)Flora is softer than Daisy.
C)There is a difference between Daisy and Flora in softness.
D)There is no difference between the softness of Daisy and Flora tissues.

Question

Quizplus · Accepted Answer

The null hypothesis suggests that there is no difference between the softness of Daisy and Flora tissues. The statistically significant result means that we can reject this null hypothesis and conclude that there is a difference, but we cannot say which brand is softer based on this information alone. Therefore, the best choice is D.

A Researcher Asked Participants to Rate the Softness of Two