The mean of certain number of observations is 46. If four observations whose mean is 52 are removed, the mean becomes 44.5 The original number of observations is |
|||||||

(a) |
35 |
(b) |
20 |
(c) |
15 |
(d) |
12 |

The mean of certain number of observations is 46. If four observations whose mean is 52 are removed, the mean becomes 44.5 The original number of observations is |
|||||||

(a) |
35 |
(b) |
20 |
(c) |
15 |
(d) |
12 |

127