Question
The following is a sample of 20 realizations of a random variable. 66 81 78 82...
| The following is a sample of 20 realizations of a random variable. | |||||
| 66 | 81 | 78 | 82 | 57 | |
| 58 | 76 | 66 | 61 | 78 | |
| 75 | 84 | 62 | 76 | 74 | |
| 90 | 64 | 60 | 63 | 70 | |
| The standard error of the sample mean is | |||||
| A. | 71.05 | ||||
| B. | 9.37 | ||||
| C. | 9.61 | ||||
| D. | 2.15 | ||||
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