regression 7. An advertising agency is testing the ef- 18, y is fectiveness of a

Question

regression 7. An advertising agency is testing the ef- 18, y is fectiveness of a new commercial. They are trying out the commercial in three different time lengths (15, 30, and 60 seconds) and idual? two formats (animated vs. live action). Each test audience will rate the product after see- ing the commercial shown in one way. Which description of this study is correct? 4-4 (a))An experiments with 2 factors (length and format), one having 3 levels (15, 30 60) and the other having 2 levels (ani- mated and live) for 6 treatments. (b) An experiment with 2 factors (length and format) at 5 levels (15, 30, 60, ani- mated, and live) for 5 treatments n experiment with 1 factor (length) locked by format with 3 levels (15, 30, tatements 60). statement (d) A sample survey with two questions and one response. color and (e) A sample stratified by length and for- mat d weight nces per (3. r8. Forty students took a test on which he/mean score was an 82 and the standard deviation was 4.5. The distribution of the on's age scores falloweda normal model and rade

Explanation / Answer

As Given in the question,

There are different time lengths 15,30,60 and two formats Live,Animated

If we have to check the commercial ad effectiveness we can test each time length in each format

first we have to check time length 15 in live format, next 30 ,then 60 in live format

similarly we have to check time length 15 in animated format, next 30 ,then 60 in animated format

hence total we are testing 6 cases

Thus by testing 3 time intervals in 2 formats make 6 treatments

therefore option A is the right answer

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