The expected range of the result of each company can be used to
determine the difference in the result of their surveys.
Response:
a. Company B has a smaller margin of error
How are the margin of error of the companies evaluated?
The expected survey result of company A = Within 1.7%, 4 out of 5 times
The expected survey result of company B = Within 2.2% 9 out of 10 times
The comparison of the unit of error can be given as follows;
[tex]Company \ A \ unit \ error \ value, \ \dfrac{1.7}{100} \times \dfrac{4}{5} < \dfrac{2.2}{100} \times \dfrac{9}{10} \ Company \ B \ error \ per \ unit \ value[/tex]
Therefore;
Company A has smaller unit margin of error than company B
Therefore, the statement that is not true is the option;
a. Company B has a smaller margin of error
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