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Levene's Test for Equality of V ariances F Sig. 0.963 0.328 Levene's Test for Equality of V ariances F Sig. 0.406 0.525 t-test for Equality of Means Table 2. T-test for annual dried lumber production (early vs. late respondents). Early Group Mean 78143299.4 Late Group Mean 89913981.8 df -0.723 148 Sig. (2-tail.) 0.471 Mean Difference -11770682.4 95% Confidence Interval of the Difference t Table 3. T-test for number of employees (early vs. late respondents). t-test for Equality of Means Early Late Group Group Mean Mean 135.32 132.45 t 0.161 Sig. df (2-tailed) 151 0.872 Mean Difference 2.86 95% Confidence Interval of the Difference Lower Upper -32.25 37.97 For all three variables examined, there were no significant differences between the groups of early and late responses for the t-tests. Therefore, it was concluded that non-response bias could not be found in this study and it is possible to draw statistical inferences from the sample to the population under examination (i.e., every wood product plant or division that has kiln drying facilities across Canada). 4.1.3. Company Profiles This section provides results of questions about general company characteristics. Respondents were asked to classify their company as producing primary wood products, secondary wood products or both. The majority of respondents (58.1%) were primary wood products producers, with 29.4% of respondents producing both primary and secondary products and only 12.5% were producing exclusively secondary (value added) products. Lower -43938498.6 Upper 20397133.9 45PDF Image | KILN DRYING PROBLEMS AND ISSUES IN CANADA
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