(Step-by-Step) In a rubber-edge manufacturing factory, the raw rubber is compounded through a kneading machine and then cut into thin ribbon strips. The
Question: In a rubber-edge manufacturing factory, the raw rubber is compounded through a kneading machine and then cut into thin ribbon strips. The strips are loaded onto mold machines and thermocast into the desired shapes of rubber edges. The weights (in grams) of a sample of rubber edges were as follows: RUBBER
| 8.63 | 8.59 | 8.63 | 8.67 | 8.64 | 8.57 | 8.53 | 8.59 | 8.66 | 8.54 |
| 8.65 | 8.61 | 8.67 | 8.65 | 8.64 | 8.64 | 8.51 | 8.61 | 8.65 | 8.62 |
| 8.57 | 8.6 | 8.54 | 8.69 | 8.52 | 8.63 | 8.72 | 8.58 | 8.66 | 8.66 |
| 8.57 | 8.66 | 8.62 | 8.66 | 8.69 | 8.57 | 8.58 | 8.65 | 8.68 | 8.56 |
| 8.54 | 8.65 | 8.65 | 8.62 | 8.66 | 8.61 | 8.64 | 8.73 | 8.62 | 8.6 |
| 8.69 | 8.5 | 8.58 | 8.63 | 8.66 | 8.59 | 8.69 | 8.7 | 8.54 | 8.62 |
| 8.63 | 8.61 | 8.65 | 8.59 | 8.61 | 8.56 | 8.64 | 8.65 | 8.67 | 8.61 |
| 8.64 | 8.61 | 8.67 | 8.65 | 8.55 | 8.71 | 8.75 | 8.56 | 8.62 | 8.66 |
Decide whether or not the data appear to be approximately normally distributed by:
- evaluating the actual versus theoretical properties.
- constructing a normal probability plot.
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