10. In single-factor ANOVA with I treatments and J observations per treatment, let (1/I)i . a....

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10. In single-factor ANOVA with I treatments and J observations per treatment, let  (1/I)i

.

a. Express E(X) in terms of . [Hint: X  (1/I)Xi

]

b. Compute E(X2 i

). [Hint: For any rv Y, E(Y2

)  V(Y)

[E(Y)]2

.]

c. Compute E(X2

).

d. Compute E(SSTr) and then show that?

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