In statistical analysis, the burden of proof lies traditionally with the: a. facts presented to the statistical analyst b. analyst c. null hypothesis d. alternative hypothesis

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

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there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."

well in order to answer the question, you have to give us the dimensions of the prism first.