# QTN 15 T-Test

QTN

QTN15

T-Test

 Paired Samples Statistics Mean N Std. Deviation Std. Error Mean Pair 1 SEI 24.055 1258 27.4824 .7748 SEX .57 1258 .496 .014

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 Paired Samples Correlations N Correlation Sig. Pair 1 SEI & SEX 1258 -.023 .409
 Paired Samples Test Paired Differences t df Sig. (2-tailed) Mean Std. Deviation Std. Error Mean 95% Confidence Interval of the Difference Lower Upper Pair 1 SEI – SEX 23.4883 27.4984 .7753 21.9673 25.0093 30.296 1257 .000

Inthe paired sample correlations table Significant value (0.409)&gt0.05implies that there is no major difference

Inthe respect of the professions held by 2010 GSS young women and menand thus there is no reason to reject the null hypothesis.

QTN16.

T-Test

 One-Sample Statistics N Mean Std. Deviation Std. Error Mean SIBLINGS 1258 3.97 4.029 .114
 One-Sample Test Test Value = 3 t df Sig. (2-tailed) Mean Difference 95% Confidence Interval of the Difference Lower Upper SIBLINGS 8.509 1257 .000 .967 .74 1.19

Sigvalue is 0.000&lt0.05 thus implying that we should reject the nullhypothesis. Also the confidence interval

Doesnot include a zero giving a reason to reject the null hypothesis

QTN15

T-Test

 Group Statistics SEX N Mean Std. Deviation Std. Error Mean OKSPEECH FEMALES 423 3.56 1.725 .084 MALES 499 3.54 1.680 .075 OKTEACH FEMALES 400 2.82 1.843 .092 MALES 473 3.05 1.802 .083
 Independent Samples Test Levene`s Test for Equality of Variances t-test for Equality of Means F Sig. t df Sig. (2-tailed) Mean Difference Std. Error Difference 95% Confidence Interval of the Difference Lower Upper OKSPEECH Equal variances assumed 1.656 .198 .203 920 .839 .023 .112 -.198 .244 Equal variances not assumed .203 887.316 .839 .023 .113 -.198 .244 OKTEACH Equal variances assumed .431 .512 -1.866 871 .062 -.231 .124 -.473 .012 Equal variances not assumed -1.862 840.566 .063 -.231 .124 -.474 .012

Significantvalues 0.918 and 0.512&gt0.05 implying that 2010 GSS were notsignificantly ready to let contentious

Peoplegive public speeches than to lease them teach in institution

References

NationalCenter for Health Statistics (US). Division of Vital Statistics, etal.Vitalstatistics of the United States.United States Bureau of the Census, 1975.

Lloyd-Jones,Donald, et al. &quotExecutive summary: heart disease and strokestatistics–2010 update: a report from the American HeartAssociation.&quotCirculation&nbsp121.7(2010): 948.