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For a group containing 100 observations,...

For a group containing 100 observations, the arithmetic mean and standard deviation are 8 and `sqrt(10.5)`. For 50 observations selected from the 100 observations, the arithmetic mean and standard deviations are 10 and 2 respectively. Find the arithmetic mean and the standard deviation of the other half.

A

`2`

B

` 3`

C

` (##MGH_50Y_JEE_MN_MAT_C23_E01_022_O03.png" width="30%">

D

`(4)`

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The correct Answer is:
B
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MCGROW HILL PUBLICATION-STATISTICS -EXERCISE (LEVEL-1 ( SINGLE CORRECT ANSWER TYPE QUESTIONS))
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