41. A researcher wants to understand how an annual mortgage payment (in dollars) depends on income level and zonal location using a two-way ANOVA without interaction. The data and an incomplete ANOVA...

Extracted text: 41. A researcher wants to understand how an annual mortgage payment (in dollars) depends on income level and zonal location using a two-way ANOVA without interaction. The data and an incomplete ANOVA table are shown below. Low 25 Income (Factor A) Medium 55 High 60 Downtown Suburbs 70 100 Zonal Location (Factor B) Midtumm 30 35 40 Uptown 10 25 20 Source of Varlation SS df MS Rows (Factor B) 1985 42 Columns (Factor A) 113750 Error Total 7456.25 How many degrees of freedom are there for factors A and B? A. 2, 3 В. 3, 4 С. 3, 6 D. 2, 4 42. A researcher with the Ministry of Transportation is commissioned to study the drive times to work (one-way) for U.S. cities. The underlying hypothesis is that average commute times are different across cities, To test the hypothesis, the researcher randomly selects six people from each of the four cities and records their one-way commute times to work. Refer to the below data on one-way commute times (in minutes) to work. Note that the grand mean is 36.625. Houston Charlotte 25 Tucson 25 Akron 45 10 15 105 35 19 15 55 10 30 10 50 70 35 24:333 10 74.167 36.667 10.833 524167 436.667 32167 14.167 Which of the following is the mean square for treatments? A. 18,567.63 B. 13,281.79 C. 5,285.83 D. 4,427.26