Question
In order to set rates, an insurance company is trying to estimate the number of sick days that full time workers at an auto repair
In order to set rates, an insurance company is trying to estimate the number of sick days that full time workers at an auto repair shop take per year. A previous study indicated that the standard deviation was2.7
days. How large a sample must be selected if the company wants to be95
%
confident that the true mean differs from the sample mean by no more than1
day?
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Elementary Algebra
Authors: Jerome E Kaufmann, Rosemary Karr, Karen L Schwitters, Marilyn Massey, R David Gustafson
10th Edition
1305161769, 9781305161764
