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Suppose it is desired to estimate the variance of the tensile strength of a particular type of thread. For 21 pieces of this type of

Suppose it is desired to estimate the variance of the tensile strength of a particular type of thread. For 21 pieces of this type of thread,(XiXave)2= 2000.

Suppose a hypothesis testing procedure is wished to be carried out to check whether or not it is safe to assume that the variability in tensile strength of thread is 110. If it is known that the truestandarddeviation is 9.7468, what is the probability of committing a Type II error? (Use=0.1)

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