1. The test score data from the sample of training participants are as follows: After training Class-A Class-B 66 60 62

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1 The Test Score Data From The Sample Of Training Participants Are As Follows After Training Class A Class B 66 60 62 1 (111.04 KiB) Viewed 33 times

1. The test score data from the sample of training participants are as follows: After training Class-A Class-B 66 60 62 60 68 65 59 58 70 68 74 66 70 68 68 68 75 68 Sample 1 2 3 4 5 6 7 8 9 10 11 12 Before training Class-A Class-B 60 62 65 60 68 66 59 56 62 68 65 66 55 45 56 60 59 60 66 58 48 58 72 58 68 60 50 58 73 58 Based on the data above: a) Were the knowledge (test scores) of participants from class A and class B before the training is less than 65? Use a significance level a=0.05 and assume that variance is equal. b) Is there a difference in the mean scores of class A and class B, at the time before or after the training? Use a significance level a=0.05. c) Was there an increase in knowledge (score) after the participants joined the training, both for class A and class B ? Use a significance level a=0.05.