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Group Statistics Std. Error gender N Mean Std. Deviation wt M 5004 209.9919465 10.00559438 Mean .1414439065 F 4996 210.0274454 10.10095335 .1429062262 Figure 4 wt Equal variances assumed Equal variances not assumed Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Difference F Sig. 1 др Sig. (2-tailed) .575 .448 -.177 9998 .860 Mean Difference -.0354989704 Std. Error Difference Lower 2010670400 -.4296308410 Upper .3586329002 -177 9996.772 .860 -.0354989704 2010685658 -.4296338379 .3586358971 Figure 5

Group Statistics Std. Error gender N Mean Std. Deviation wt M 5004 209.9919465 10.00559438 Mean .1414439065 F 4996 210.0274454 10.10095335 .1429062262 Figure 4 wt Equal variances assumed Equal variances not assumed Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Difference F Sig. 1 др Sig. (2-tailed) .575 .448 -.177 9998 .860 Mean Difference -.0354989704 Std. Error Difference Lower 2010670400 -.4296308410 Upper .3586329002 -177 9996.772 .860 -.0354989704 2010685658 -.4296338379 .3586358971 Figure 5

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The two-tailed p-value associated with this test is 0.860. Should the null hypothesis be rejected?
 Is there sufficient evidence to suggest that there is a statistically significant difference between the two means in question?

If we now wanted to know whether there was a difference in weight between those with a low NYHA class (1 and 2) and those with a high NYHA class (3 and 4), what p-value would you report? 

Group Statistics Std. Error gender N Mean Std. Deviation wt M 5004 209.9919465 10.00559438 Mean .1414439065 F 4996 210.0274454 10.10095335 .1429062262 Figure 4 wt Equal variances assumed Equal variances not assumed Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Difference F Sig. 1 др Sig. (2-tailed) .575 .448 -.177 9998 .860 Mean Difference -.0354989704 Std. Error Difference Lower 2010670400 -.4296308410 Upper .3586329002 -177 9996.772 .860 -.0354989704 2010685658 -.4296338379 .3586358971 Figure 5
Transcribed Image Text:Group Statistics Std. Error gender N Mean Std. Deviation wt M 5004 209.9919465 10.00559438 Mean .1414439065 F 4996 210.0274454 10.10095335 .1429062262 Figure 4 wt Equal variances assumed Equal variances not assumed Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Difference F Sig. 1 др Sig. (2-tailed) .575 .448 -.177 9998 .860 Mean Difference -.0354989704 Std. Error Difference Lower 2010670400 -.4296308410 Upper .3586329002 -177 9996.772 .860 -.0354989704 2010685658 -.4296338379 .3586358971 Figure 5
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