12. A company recently embarked on an in-store promotional compaign, with displays of its antacid featured prominently
Question:
12. A company recently embarked on an in-store promotional compaign, with displays of its antacid featured prominently in the supermarkets. The company also ran its usual radio and television commercials. Over a period of 10 weeks, the company kept track of its expenditure on radio and television advertising, variableX1 as well as its expenditure on in-store displays, variableX2• The resulting sales for each week in the area studied were recorded as the dependent variable Y. The company analyst hypothesised a linear regression linking sales volume with the two independent variables. Using the following data (all values in thousands of Rs), fit the desired regression equation
Now, estimate the sales ifX1 = Rs 13,000 andX2 = Rs 7,000.
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