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,  ∑(Xi−Xave)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 true standard deviation is 9.7468, what is the probability of committing a Type II error? (Use  α=0.1)

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To determine the probability of committing a Type II error we need to calculate the probability of f... View the full answer