A manufacturing company is looking to close one of two factories based on the amount of...

 

 

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A manufacturing company is looking to close one of two factories based on the amount of emissions. Do the factories emit the same amount of pollutants, on average? To test this, a random sample of 9 days were observed for Factory A and 10 days were observed for Factory B, and the emissions (in tons) were recorded. Output from SPSS appears below. Emissions (tons) Equal variances assumed Equal variances not assumed Levene's Test for Equality of Variances F 1.718 Sig. 207 Independent Samples Test t -2.273 -2.335 df 17 14.793 Sig. (2-tailed) 036 034 t-test for Equality of Means Mean Difference -10.6611 -10.6611 Std. Error Difference 4.6902 4.5651 95% Confidence Interval of the Lower Difference -20.5566 -20.4033 Upper -.7656 -9189 What is the appropriate conclusion to the of whether the factories have the same average daily emissions? O There is no evidence that the 9 daily emissions from Factory A and the 10 daily emissions from Factory B in this sample are different on average (p = 0.034). O There is sufficient evidence to suggest that the 9 daily emissions from Factory A and the 10 daily emissions from Factory B in this sample are different on average (p = 0.034). O There is no evidence that the average daily emissions are different for Factory A and Factory B (p = 0.034). O There is sufficient evidence to suggest that the average daily emissions are different for Factory A and Factory B (p = 0.034). Does a new hybrid plant grow better in the sun or in the shade? To test this, a random sample of 22 of the plant's seedlings were placed in scattered plots with a lot of exposure to sunlight (10 "sun" plants) or little exposure to sunlight (12 "shade" plants). 3 months later, the height of the plants in cm) was recorded. Output appears below Independent Samples T-Test Height Student's Weich's statistic df P. 2.706 20.000 0.014 2.620 15,786 0.019 Mean difference SE difference 3.199 8.656 8.656 3.304 95% Confidence interval Lower Upper 1.982 15.329 1.645 15.666 What is the appropriate conclusion to the test of whether sun and shade plants have the same average growth? There is no evidence that the 10 sun plants and 12 shade plants in this sample have different average growth (p -0.019). There is sufficient evidence to suggest that the 10 sun plants and 12 shade plants in this sample have different average growth to = 0.019) There is no evidence that hybrid plants of this new variety have different average growth if planted in sunny or shady areas (p=0.019). There is sufficient evidence to suggest that hybrid plants of this new variety have different average growth if planted in sunny or shady areas (p=0.019). A manufacturing company is looking to close one of two factories based on the amount of emissions. Do the factories emit the same amount of pollutants, on average? To test this, a random sample of 9 days were observed for Factory A and 10 days were observed for Factory B, and the emissions (in tons) were recorded. Output from SPSS appears below. Emissions (tons) Equal variances assumed Equal variances not assumed Levene's Test for Equality of Variances F 1.718 Sig. 207 Independent Samples Test t -2.273 -2.335 df 17 14.793 Sig. (2-tailed) 036 034 t-test for Equality of Means Mean Difference -10.6611 -10.6611 Std. Error Difference 4.6902 4.5651 95% Confidence Interval of the Lower Difference -20.5566 -20.4033 Upper -.7656 -9189 What is the appropriate conclusion to the of whether the factories have the same average daily emissions? O There is no evidence that the 9 daily emissions from Factory A and the 10 daily emissions from Factory B in this sample are different on average (p = 0.034). O There is sufficient evidence to suggest that the 9 daily emissions from Factory A and the 10 daily emissions from Factory B in this sample are different on average (p = 0.034). O There is no evidence that the average daily emissions are different for Factory A and Factory B (p = 0.034). O There is sufficient evidence to suggest that the average daily emissions are different for Factory A and Factory B (p = 0.034). Does a new hybrid plant grow better in the sun or in the shade? To test this, a random sample of 22 of the plant's seedlings were placed in scattered plots with a lot of exposure to sunlight (10 "sun" plants) or little exposure to sunlight (12 "shade" plants). 3 months later, the height of the plants in cm) was recorded. Output appears below Independent Samples T-Test Height Student's Weich's statistic df P. 2.706 20.000 0.014 2.620 15,786 0.019 Mean difference SE difference 3.199 8.656 8.656 3.304 95% Confidence interval Lower Upper 1.982 15.329 1.645 15.666 What is the appropriate conclusion to the test of whether sun and shade plants have the same average growth? There is no evidence that the 10 sun plants and 12 shade plants in this sample have different average growth (p -0.019). There is sufficient evidence to suggest that the 10 sun plants and 12 shade plants in this sample have different average growth to = 0.019) There is no evidence that hybrid plants of this new variety have different average growth if planted in sunny or shady areas (p=0.019). There is sufficient evidence to suggest that hybrid plants of this new variety have different average growth if planted in sunny or shady areas (p=0.019).

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Answer 1 The appropriate conclusion to the test of whether the factories have the same average daily emissions is that there is sufficient evidence to suggest that the 9 daily emissions from Factory A ... View the full answer