6. A researcher would like to determine whether people really can tell the difference between bottled water and tap water. Participants are asked to taste two unlabeled glasses of water one bottled and one tap and identify the one they thought tasted better. Out of 40 people in the sample 28 picked the bottled water. Was the bottled water selected significantly more often than would be expected by chance? Use a two tailed test with a significance of .05
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