Air Force Training Program
Air Force Training Program- Case 03
[Type the document subtitle]
An Air Force introductory course currently uses a personalized system of instructions in the form of videotapes, from which students learn independently and then are required to pass a test. There is a proposed alternative training program which will involve use of computer-assisted instruction. The scope of the report is to compare the difference between course completion times for the Current Training method and the Proposed Training method and recommend the best training course.
Table 1 – Comparative study of Course Completion Times (in hours) of the two training methods
Training Method
Sample Size
Mean
Standard Deviation
Skewness
Min Value
Max Value
95% confidence interval for population mean
95% confidence interval for standard deviation
Current
61
75.07
3.94
-0.22
65.00
84.00
74.06 - 76.08
3.35 - 4.80
Proposed
61
75.43
2.51
-0.29
69.00
82.00
74.78 - 76.07
2.13 - 3.05
From the data in Table 1 we can see that the mean values of the course completion times for both the training methods are almost same. Although, the proposed training method’s mean value of completion time is slightly higher than that of the current training method, we see that the maximum time taken to complete the course using the proposed method is less by 2 hours. We also see that the sample standard deviation for the proposed method is much lower than that of the current method. The negative skewness of both the training method suggests that the median time taken to complete the course is higher than the mean time taken. From the table we can also see that range for 95% confidence interval for population mean for the proposed method is narrower. This suggests that we have greater confidence that the population mean for proposed method will be within the range specified. The 95% confidence intervals for the standard deviation of both methods do not overlap. Thus we
[Type the document subtitle]
An Air Force introductory course currently uses a personalized system of instructions in the form of videotapes, from which students learn independently and then are required to pass a test. There is a proposed alternative training program which will involve use of computer-assisted instruction. The scope of the report is to compare the difference between course completion times for the Current Training method and the Proposed Training method and recommend the best training course.
Table 1 – Comparative study of Course Completion Times (in hours) of the two training methods
Training Method
Sample Size
Mean
Standard Deviation
Skewness
Min Value
Max Value
95% confidence interval for population mean
95% confidence interval for standard deviation
Current
61
75.07
3.94
-0.22
65.00
84.00
74.06 - 76.08
3.35 - 4.80
Proposed
61
75.43
2.51
-0.29
69.00
82.00
74.78 - 76.07
2.13 - 3.05
From the data in Table 1 we can see that the mean values of the course completion times for both the training methods are almost same. Although, the proposed training method’s mean value of completion time is slightly higher than that of the current training method, we see that the maximum time taken to complete the course using the proposed method is less by 2 hours. We also see that the sample standard deviation for the proposed method is much lower than that of the current method. The negative skewness of both the training method suggests that the median time taken to complete the course is higher than the mean time taken. From the table we can also see that range for 95% confidence interval for population mean for the proposed method is narrower. This suggests that we have greater confidence that the population mean for proposed method will be within the range specified. The 95% confidence intervals for the standard deviation of both methods do not overlap. Thus we