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According to a travel​ website, workers in a certain country lead the world in vacation​ days,...

According to a travel​ website, workers in a certain country lead the world in vacation​ days, averaging 27.18 days per year. The following data show the number of paid vacation days for a random sample of 20 workers from this country. Complete parts a through c below. 2 4 3 5 19 18 25 23 20 31 22 29 25 22 35 35 33 28 35 64 a. Construct a 95​% confidence interval to estimate the average number of paid vacation days for workers from this country. The 95​% confidence interval to estimate the average number of paid vacation days for workers from this country is from nothing days to nothing days.

And if anyone could tell me how to find the standard deviation for this problem that would be awesome!

Please help!!!

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