Question

you randomly sample 16 beers snd find an average alcohol of 4.23% with a standard deviation...

you randomly sample 16 beers snd find an average alcohol of 4.23% with a standard deviation for these beers of 1.25%. assume that alcohol content is normally distributed.

a. find a 90% confidence interval for the true average alcohol percentage of their beers
b. suppose you randomly sample a 17th beer. provide 95% prediction interval for the alcohol content of this beer
c. provide a 95% confidence interval for the true variance of the alcohol content of their beers
Math   Statistics-And-Probability   
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Answer #1

a)

90% confidence interval of mean =3.682 , 4.778

b)

c)

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