23. Two methods A and B, were used to find the latent heat of fusion of ice. 13 measurements were made with method A and 8 measurements were made with method B with statistics: XA = 80.02, XB = 79.98,sA = 0.024 and sB = 0.031. To test equal means assuming normality and equal variances, the observed test statistic (to 1dp) and the P-value are:

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23. Two methods A and B, were used to find the latent heat of fusion of ice. 13
measurements were made with method A and 8 measurements were made with
method B with statistics: XA = 80.02, XB = 79.98,sA = 0.024 and sB = 0.031. To test
equal means assuming normality and equal variances, the observed test statistic
(to 1dp) and the P-value are:
Test statistics = 1.2, P-value= P(t19|×1.2) >0.2
Test statistics-3.3;P-value= P(12133 0.005
Test statistics = 3 3 P-value = P(t19|>33)-0.01
Test statistics 3.3 P-value = P(t19 x3.3)-0.005
Transcribed Image Text:23. Two methods A and B, were used to find the latent heat of fusion of ice. 13 measurements were made with method A and 8 measurements were made with method B with statistics: XA = 80.02, XB = 79.98,sA = 0.024 and sB = 0.031. To test equal means assuming normality and equal variances, the observed test statistic (to 1dp) and the P-value are: Test statistics = 1.2, P-value= P(t19|×1.2) >0.2 Test statistics-3.3;P-value= P(12133 0.005 Test statistics = 3 3 P-value = P(t19|>33)-0.01 Test statistics 3.3 P-value = P(t19 x3.3)-0.005
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