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A survey was conducted of the age(in years) of 5050randomly selected customers. The mean was 27.8427.84years and the standard deviation was 10.4610.46years. a) How large

A survey was conducted of the age(in years) of 5050randomly selected customers. The mean was 27.8427.84years and the standard deviation was 10.4610.46years.

a) How large would the sample size have to be to cut the margin of error inhalf?

b) About how large would the sample size have to be to cut the margin of error by a factor of 2020?

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