The following data resulted from a taste test of chocolate bars with and without almonds. 12 people were randomly selected to rate, on a scale of 0 to 5, with 5 as the highest rating, the taste of the bars. If the bar had almonds, it was assigned a code of 1; if no almonds, it was assigned a code of 0. Assume the population standard deviations are the same. At the .05 significance level, do these data show a difference in the taste ratings between chocolate bars with and without almonds?

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