Let  x1, x2, x3 …………xn  be  n observations such that  Σxi2  =  729  and  Σxi  =  81, then a possible value of  n among the following is:

Question

Let  x1, x2, x3 …………xn  be  n observations such that  Σxi2  =  729  and  Σxi  =  81, then a possible value of  n among the following is:
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Solution 1

The problem involves the sum of squares of observations and the sum of the observations. We can use the formula for the sum of squares, which is Σxi^2 = n*(mean^2 + standard deviation^2), and the formula for the sum of observations, which is Σxi = n*mean.

Given that Σxi^2 = 729 and Σxi = 81, we can Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study prob

Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solv

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