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Use the given information to find the number of degrees of freedom, the critical values x_{1} ^ 2 and chi_{R} ^ 2 and the confidence interval estimate of is reasonable to assume that a simple random sample has been selected from a population with a normal distribution Nicotine in menthol cigarettes 80% confidence; n=27.s=0.29 mg.
Df = Type a whole number
Sagot :
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