I want to estimate the population mean number of times that adults go to the movie...

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I want to estimate the population mean number of times that adults go to the movie...

I want to estimate the population mean number of times that adults go to the movie each week. I spoke with seven people I know and found that they went out 2, 0, 1, 5, 0, 2, and 3 times last week. I want to calculate an 80% confidence interval for the population mean.

Assume a random sample was chosen, which is required to determine a confidence interval.

math Statistics-And-Probability

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Answer 1

Answer #1

Solution:- Given that samples : 2,0,1,5,0,2,3

X = 1.8571 , s = 1.7728, n = 7, Confidence = 80%

t = 1.440

80% confidence interval for the population mean : X +/- t*s/sqrt(n)

= 1.8571 +/- 1.440* 1.7728/sqrt(7)

= 0.8922 , 2.8220

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Answer 2

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