MCQOPTIONS
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| 1. |
Find the mean of 50 observations. It is given that the mean of 32 of them is 28 and the mean of the remaining 18 observations is 30. |
| A. | 30.24 |
| B. | 28.72 |
| C. | 24.82 |
| D. | 30.32 |
| Answer» C. 24.82 | |