SOLUTION: Use the given information to find the number of degrees of freedom, the critical values X2/L and X2/R, and the confidence interval estimate of o. It is reasonable to assume t
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Question 1168606: Use the given information to find the number of degrees of freedom, the critical values X2/L and X2/R, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution.
Nicotine in menthol cigarettes 90% confidence; n=24, s=0.21 mg.
You can put this solution on YOUR website! df=23
the half-interval is t(0.95,df=23)*s/sqrt(n); t-value is 1.714
=x bar +/-1,714*0.21/sqrt(24)
=x bar +/-0.073
