# Answers for Assignment_3 (Fall 2008) - STAS2126...

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SENSAT 87.215 1 87.215 .714 .400 14164.751 116 122.110 14251.966 117 Between Groups Within Groups Total Sum of Squares df Mean Square F Sig. ANOVA SENSAT 564.773 1 564.773 4.786 .031 13687.193 116 117.993 14251.966 117 Between Groups Within Groups Total Sum of Squares df Mean Square F Sig. Descriptives SENSAT 70 73.17 11.11 1.33 70.52 75.82 49 99 48 77.63 10.49 1.51 74.58 80.67 57 103 118 74.98 11.04 1.02 72.97 77.00 49 103 Non-drinker Coffee Drinker Total N Mean Std. Deviation Std. Error Lower Bound Upper Bound 95% Confidence Interval for Mean Minimum Maximum STAS2126 Assignment#3 (Summer 2008) SHOW YOUR WORK DUE BEFORE LAB SESSION ON SEPT 23/24/25. Submit assignment to Digital Dropbox in Blackboard. Research Question: Do coffee drinkers have higher sensation seeking scores than non-drinkers? 1a Given the above research question, what would be the null hypothesis (you may have to consult course notes…use null hypothesis as the search term) There is no difference between the sensation seeking scores of coffee drinkers and non-drinkers 1b Check the ANOVA table below …what is the Sig level or p value (these two terms mean exactly the same thing and I will use them interchangeably)? Is it statistically significant? Sig. = p value = .031…YES statistically significant because it is LESS than .05 1c According to the descriptives table, how many of the study participants were non-coffee drinkers? 70 1d Look at the descriptives table and the ANOVA summary table. What can we conclude from these results about sensation seeking scores for coffee drinkers and non-drinkers? (refer to the means in your answer and also statistical significance) Sig. less than .05…therefore we can say that coffee drinkers have significantly higher sensation seeking scores (77.63) than non-drinkers (73.17) 2a For the results shown BELOW, what is the mean sensation seeking score for TEA drinkers (TD) and non drinkers (ND)? TD= 73.8 ND=75.61 2b Check the ANOVA table below…what is the Sig level or p value? Is it statistically significant? Sig. = p value = .40…greater than .05 therefore NOT significant Descriptives SENSAT 77 75.61 10.67 1.22 73.19 78.03 49 99 41 73.80 11.74 1.83 70.10 77.51 50 103 118 74.98 11.04 1.02 72.97 77.00 49 103 Non-drinker Tea Drinker Total N Mean Std. Deviation Std. Error Lower Bound Upper Bound 95% Confidence Interval for Mean Minimum Maximum 2c Look at the descriptives table and the ANOVA summary table (above). What can we conclude from these results about sensation seeking scores for tea drinkers and non-drinkers? (refer to the means in your answer and also statistical significance) There is no significant difference between the sensation seeking scores of tea drinkers and non-drinkers (in this case we cannot reject the null hypothesis)

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ANOVA for Sensation seeking Sum of Squares df Mean Square F Sig.
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Answers for Assignment_3 (Fall 2008) - STAS2126...

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