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The geometric mean of 3,3^2,....,3^n is...

The geometric mean of `3,3^2,....,3^n` is

A

`3^(n//2)`

B

` 3^((n+1) //2) `

C

`3^(n(n+1)//2`

D

none of these

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The correct Answer is:
B
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MCGROW HILL PUBLICATION-STATISTICS -EXAMPLES (LEVEL-1 (SINGEL CORRECT ANSWER TYPE QUESTIONS ))
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  2. The monthly sales for the first 11 months of the year of a certain sal...

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  3. The A.M of the observations 1.3.5,3.5.7,5.7.9,...,(2n-1)(2n+1)(2n+3) i...

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  4. If x(1), x(2),"…......." x(18) are observation such that sum(j=1)^(18)...

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  5. A variable takes the values of 0,1,2,.....,n with frequencies proporti...

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  6. The mean of two samples of sizes 200 and 300 were found to be 25, 10 r...

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  7. The variance of first 20- natural numbers is

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  8. If the standard deviation of x1, x2,……xn is 3.5, then the standard de...

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  9. The geometric mean of 3,3^2,....,3^n is

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  10. If the median of 21 observations is 40 and if the observations greater...

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  11. The median from the following data

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  12. If the standard deviation of numbers 2,4 5 and 6 is a constant alpha ...

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  13. The variance of alpha,beta and gamma is 9, then variance of 5 alpha, 5...

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  14. 1,2,4,6,8,9 transformed into another series whose mean is 12. Two midd...

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  15. A variable takes the values of 0,1,2,.....,n with frequencies proporti...

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  16. If the mean deviation of the numbers 1,""1""+""d ,""1""+""2d ,""..."",...

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  17. For two data sets, each of size 5, the variances are given to be 4 and...

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  18. If the mean deviation about the median of the numbers a, 2a, ....., ...

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  19. A scientist is weighing each of 30 fishes. Their mean weight worked ou...

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