A random sample of 14 cigarettes of a certain brand has an average nicotine content of 4.3 milligrams and a standard deviation of 2.1 milligrams. What is the margin of error of the 99% confidence interval for the average nicotine content of the cigarettes. 2. A random sample of 14 cigarettes of a certain brand has an average nicotine content of 4.9 milligrams and a standard deviation of 1.9 milligrams. What is the upper bound of the 99% confidence interval for the average nicotine content of the cigarettes

Q: 2. Construct a 95% confidence interval for the population standard deviation of a random sample of…

A: given data   sample size(n) = 15 sample standard deviation(s)  = 12.7construct 95 % ci for σ.

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A: Hypotheses: H0:σ≤0.311; Ha:σ>0.311 (claim)

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A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

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A: Solution

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A: P value has find by using R command.

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A:

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A: Given, Mean score μ=508Standard deviation σ=121Sample size n=200

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