(Solution) - An experiment is conducted to study the effects of two -(2025 Original AI-Free Solution)

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An experiment is conducted to study the effects of two sales approaches-high-pressure (H) and low-pressure (L)-and to study the effects of two sales pitches (1 and 2) on the weekly sales of a product. The data in Table 11.14 on the next page are obtained by using a completely randomized
TABLE 11.14
Results of the Sales Approach Experiment

FIGURE 11.13
Excel Output of a Two-Way ANOVA of the Sales Approach Data
design, and Figure 11.13 gives the Excel output of a two-way ANOVA of the sales experiment data.
a. Perform graphical analysis to check for interaction between sales pressure and sales pitch,
b. Test for interaction by setting ? = .05.
c. Test for differences in the effects of the levels of sales pressure by setting ? = .05. That is, test the significance of sales pressure effects with ? = .05.
d. Calculate and interpret a 95 percent individual confidence interval for µH* - µL?
e. Test for differences in the effects of the levels of sales pitch by setting ? = .05. That is, test the significance of sales pitch effects with ? = .05.
f. Calculate and interpret a 95 percent individual confidence interval for µ?1 - µL?.
g. Calculate a 95 percent (individual) confidence interval for mean sales when using high sales pressure and sales pitch 1. Interpret this interval.