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If the standard deviation of a, b, c is ...

If the standard deviation of a, b, c is `sigma` this standard deviation of 4a+7, 4b+7, 4c+7 will be of:

A

`4sigma+7`

B

`sigma+7`

C

`4sigma`

D

`12sigma+7`

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The correct Answer is:
c
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PREMIERS PUBLISHERS-STATISTICS AND PROBABILITY -OTHER IMPORTANT OBJECTIVE TYPE QUESTIONS
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  7. Two dice are rolled. Find the probability that the sum of the outcome ...

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  11. If P(A)=0.5, P(B)=0.3, P(AcapB)=0.25. Find P(AcupB)

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  12. Ia A and B are mutually exclusive, given P(AcupB)=(3)/(5), P(A)=(1)/(2...

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  13. Given A and B are mutually exclusine events P(not A)= 0.35 P(AcupB)=0....

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  14. Find the odd one out:

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  15. The sum of all deviations of the data from its mean is

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  16. The range of 6, 6, 6, 6, 6, 6, 6 is:

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  18. If P(A)=(x)/(21) and P(barA) is 11/21. Find x.

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  20. Match the following :

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