The multiple-play strategy. Multiple play is a bundling strategy in which multiple services are provided over a single network. A common triple-play service these days is Internet, television, and telephone. The market for this service has become a key battleground among telecommunication, cable, and broadband service providers. A study compared the pricing (average monthly cost in U.S. dollars) among triple-play providers using DSL, cable, or fiber platforms. The following table summarizes the results of 47 providers.
|
Group
|
n
|
x‾
|
s
|
|
DSL
|
19
|
104.49
|
26.09
|
|
Cable
|
20
|
119.98
|
40.39
|
|
Fiber
|
8
|
83.87
|
31.78
|
(a) Plot the means versus the platform type. Does there appear to be a difference in pricing?
(b) Is it reasonable to assume that the variances are equal? Explain.
(c) The F statistic is 3.39. Give the degrees of freedom and either an approximate (from a table) or an exact (from software) P-value. What do you conclude?