trying to 3 The manager of a consulting fiem in Lansing. Micvgan given to a\" ne
ID: 3056395 • Letter: T
Question
trying to 3 The manager of a consulting fiem in Lansing. Micvgan given to a" new entry-level professorate lnaneffort to make randomly chosen employees The re trairing and pos chosen mmediately botore and after the training program to each of 20 traningadres of these 20 individuals are shown n the table below Usng a 5% leelofsigrutoarce do the green data support that the ts training programs is offective in computing? after 2 63 77 3 74 83 4 64 88 5 84 80 6 81 80 54 83 8 61 88 9 81 80 10 86 88 11 75 93 12 71 78 13 86 82 14 74 84 15 65 86 16 90 89 17 72 81 18 71 90 19 85 86 20 66 92Explanation / Answer
Paired T for Before - After
N Mean StDev SE Mean
Befor 20 73.25 10.14 2.27
After 20 84.25 4.91 1.10
Difference 20 -11.00 11.00 2.46
95% upper bound for mean difference: -6.75
T-Test of mean difference = 0 (vs < 0): T-Value = -4.47 P-Value = 0.000
Comment: The estimated p-value is 0.0000. Hence, we can conclude that the firm's training programme is effective in increasing the new employee's working knowledge of computing at 0.05 level of significance.
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