Question

A​ start-up cell phone applications company is interested in determining whether household incomes are different for subscribers to four different service providers. A random sample of 30 subscribers to each of the 4 service providers was​ taken, and the annual household income for each subscriber was recorded. The partially completed ANOVA table for the analysis is below. Complete parts a and b below.

Answer 1

To complete the ANOVA table, we need to fill in the missing sums of squares, degrees of freedom, mean square, and F-test statistic. The ANOVA table should have the source of variation, sum of squares, degrees of freedom, mean square, and the F-test statistic for each source. The missing values can be calculated based on the provided information.

Step-by-step explanation:

The ANOVA table is used to analyze whether there are significant differences in household incomes among subscribers to three different service providers. To complete the ANOVA table, we need to fill in the missing sums of squares, the degrees of freedom for each source, the mean square, and the calculated F-test statistic.

The ANOVA table should look like this:

Source of Variation Sum of Squares (SS) Degrees of Freedom (df) Mean Square (MS) F-test statistic

Between groups 3,146,458,478 2 1,573,229,239 3

Within groups 9,423,844,014 75 125,651,253 not enough information provided

Total 12,570,302,492 77 not enough information provided not enough information provided

The probable question is in the image attached.