The next three questions are based on the followinginformation.
To study the weight accuracy of a 50lb fertilizer bag, 12 samplesof 12 bags of fertilizer in each sample were taken and the resultsare as follows.
| Mean | Range |
Sample 1 | 47 | 1.1 |
Sample 2 | 46 | 1.31 |
Sample 3 | 46 | 0.91 |
Sample 4 | 47 | 1.1 |
Sample 5 | 48 | 1.21 |
Sample 6 | 50 | 0.82 |
Sample 7 | 49 | 0.86 |
Sample 8 | 49 | 1.11 |
Sample 9 | 51 | 1.12 |
Sample 10 | 52 | 0.99 |
Sample 11 | 50 | 0.86 |
Sample 12 | 51 | 1.2 |
1.
The overall average weight of a bag of fertilizer is ________pound, and the average range is ____________ pound. (Please roundto two decimal points and include no units.)
2.
The upper control limit for a 99.7% controlchart for the mean is ________ pound, and thelower control limit is __________ pound. (Pleaseround to two decimal points and include no units. Please enter theupper limit first.)
3.Ă‚Â Ă‚Â
The upper control limit for a 99.7% controlchart for the range is_________ pound, and thelower control limit is _________ pound. (Pleaseround to two decimal points and include no units. Please enter theupper limit first.)
