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A study examined whether the content of TV shows influenced the ability of viewe

ID: 3364793 • Letter: A

Question

A study examined whether the content of TV shows influenced the ability of viewers to recall brand names of items featured in the commercials. The researchers randomly assigned volunteers to watch one of three programs, each containing the same nine commercial After the shows ended the subjects were asked to recall the brands of products that were advertised. A 95% confidence interval for the difference in mean number of brands recalled between the violent and neutral programs (violent-neutral) was-1.6,0.8). Based on the confidence interval, which of the following is not possible? Choose the correct answer below A. Those watching neutral programming recalled 0.5 more brands than those watching violent programming, on average. O B. Those watching neutral programming recalled 1 less brand than those watching violent programming, on average C. Those watching neutral programming recalled 1 more brand than those watching violent programming, on average O D. Those watching neutral programming recalled 0.5 less brands than those watching violent programming, on average ( ) E. The average number of brands recalled was the same for those watching neutral programming and those watching violent programming.

Explanation / Answer

here as range is (-1.6 ; 0.8 ) whcih reflect that violent -neural is minimum -1.6 or maximum 0.8 ; or we can say

that neutral -violent is minimum -0.8 and maximum 1.6

therefore neutral can not go below -0.8

hence option B is correct.