Posted by **Jamie** on Wednesday, April 21, 2010 at 10:00pm.

A random survey of 500 households

determines that 20% of the households would do so and that each participating

household expects to recycle about 100 cans monthly with a standard deviation

of 30 cans.

Question

(a) What is the 95%

confidence interval regarding the percentage of households expected to

recycle?

(b) what is the 95% confidence interval regarding the number of cans to be recycled?

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