Construct the 95% two-sided confidence interval and one-sided intervals of the population mean with

Statistics
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Construct the 95% two-sided confidence interval and one-sided intervals of the population mean with the sample: 15, 30, 45, 10, 20, 8, 6, 7, 21, 25, 10, 20, 20, 30, 40.

Apr 22nd, 2015

95% Confident the population mean is within the range: 20.47+/- 1.96*11.898/sqrt(15)

13.8811 < mean <27.0589

One- sided 95% CI: right sided: 25.52 (20.47+1.645*11.898/sqrt(15))

                                  left- sided: 15.42  (20.47-1.645*11.898/sqrt(15))

Apr 22nd, 2015

may i see the workings please ..

Apr 22nd, 2015

i got it .. i was to follow the workings you submitted .. please disregard the request for the working submitted earlier .. thank you .. thank you ..

Apr 22nd, 2015

15
30
45
10
20
8
6
7  
21  
25  
10  
20  
20  
30  
40  
20.47 Mean
11.898 stdev
I used excel to compute mean and stdev. and i placed the formula in ( )

Apr 22nd, 2015

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Apr 22nd, 2015
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Apr 22nd, 2015
Dec 6th, 2016
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