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A survey was conducted of the age (in years) of 50 randomly selected customers. The mean was 33.73 years and the standard deviation was 10.45
A survey was conducted of the age (in years) of 50 randomly selected customers. The mean was 33.73 years and the standard deviation was 10.45 years.
a) How large would the sample size have to be to cut the margin of error in half?
b) About how large would the sample size have to be to cut the margin of error by a factor of 10?
a) How large would the sample size have to be to cut the margin of error in half?
b) About how large would the sample size have to be to cut the margin of error by a factor of 10?
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Business Statistics
Authors: Robert A. Donnelly
2nd Edition
0321925122, 978-0321925121
