TABLE 11-11
A student team in a business statistics course designed an experiment to investigate whether the brand of bubblegum used affected the size of bubbles they could blow.To reduce the person-to-person variability,the students decided to use a randomized block design using themselves as blocks.
Four brands of bubblegum were tested.A student chewed two pieces of a brand of gum and then blew a bubble,attempting to make it as big as possible.Another student measured the diameter of the bubble at its biggest point.The following table gives the diameters of the bubbles (in inches) for the 16 observations.
-Referring to Table 11-11,the null hypothesis for the randomized block F test for the difference in the means is

Question

TABLE 11-11
A student team in a business statistics course designed an experiment to investigate whether the brand of bubblegum used affected the size of bubbles they could blow.To reduce the person-to-person variability,the students decided to use a randomized block design using themselves as blocks.
Four brands of bubblegum were tested.A student chewed two pieces of a brand of gum and then blew a bubble,attempting to make it as big as possible.Another student measured the diameter of the bubble at its biggest point.The following table gives the diameters of the bubbles (in inches) for the 16 observations.

-Referring to Table 11-11,the null hypothesis for the randomized block F test for the difference in the means is

Quizplus · Accepted Answer

The null hypothesis for the randomized block design F test is that there is no difference in the means between the different brands of bubblegum. This is represented in choice A, where μS1U1B1A represents the mean diameter of bubbles blown with brand A, and so on for the other brands. The null hypothesis assumes that all the means are equal.

TABLE 11-11 a Student Team in a Business Statistics Course Designed an Designed