SOLUTION: Below are weights (in lbs) of glass discarded in one week by randomly selected households.
3.52 8.87 3.99 3.61 2.33 3.21 0.25 4.94
Construct a 95% confidence interval estima
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Question 240141: Below are weights (in lbs) of glass discarded in one week by randomly selected households.
3.52 8.87 3.99 3.61 2.33 3.21 0.25 4.94
Construct a 95% confidence interval estimate of the mean weight of glass discarded by all households.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Below are weights (in lbs) of glass discarded in one week by randomly selected households.
3.52 8.87 3.99 3.61 2.33 3.21 0.25 4.94
Construct a 95% confidence interval estimate of the mean weight of glass discarded by all households.
----------------
sample mean: 3.84
Sample std: 2.457
------------------------
standard error = ts/sqrt(n)
t = invT(0.025,7) = 2.3646
---
standard error = 2.3646*2.457/sqrt(7) = 2.196
------------------------------
95% CI: 3.84-2.196 < u < 3.84+2.196
95% CI:1.644 < u < 6.036
===============================
Cheers,
Stan H.
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