Only solve 18 question QUESTION 18Gueutal et al. (1995) tested the hypothesis that pregnancy would have an effect on performance appraisal ratings. The data below has beenshortened and simplified, but the results are similar to the original study.We obtain a random sample of 7 female employees who are pregnant and 8 female emplayees who are not pregnant. Performance ratings weremade on a scale from 1 (poor) to 7 (excellent).Pregnant Not pregnantINMean15SS15Variance 2.53213What is the weighted variance S 7QUESTION 19Gueutal et al. (1995) tested the hypothesis that pregnancy would have an effect on performance appraisal ratings The data below has beenshortened and simplified, but the results are similar to the original study.We obtain a random sample of 7 female employees who are pregnant and 8 female employees who are not pregnant. Performance ratings weremade on a scale from 1 (poor) to 7 (excellent).Pregnant Not pregnant1832117MeanIN1515Variance 25SSWhat is

18) From the given information, it is clear that, In a sample who are pregnant, Number of sample…

QUESTION 18 Gueutal et al. (1995) tested the hypothesis that pregnancy would have an effect on performance appraisal ratings. The data below has been shortened and simplified, but the results are similar to the original study. We obtain a random sample of 7 female employees who are pregnant and 8 female employees who are not pregnant. Performance ratings were made on a scale from 1 (poor) to 7 (excellent). Pregnant Not pregnant Mean 3. 21 SS 15 Variance 2.5 What is the weghted variance T QUESTION 19 Gueutal et al. (1995) tested the hypothesis that pregnancy would have an effect on performance appraisal ratings The data below has been shortened and simplified, but the results are sirmilar to the original study. We obtain a random sample of7 female employees who are pregnant and 8 female employees who are not pregnant. Performance ratings were made on a scale from 1 (poor) to 7 (excellent). Pregnant Not pregnant 17 Mean 15 Variance25 IN 15 SS 21 What is