A probability distribution of the claim sizes for an auto insurance policy appears in the following table.
| Claims | Probability |
|---|---|
| 1 | 0.2 |
| 2 | 0.45 |
| 3 | 0.05 |
| 4 | 0.05 |
| 5 | 0.1 |
| 6 | 0.15 |
Find the percentage of claims within one standard deviation of the mean. Give your answer as a decimal.
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