document.write( "Question 1177253: 6.Insurancecompanies are becoming concerned that the increased use of cell phones is resulting in more car crashes, and they are considering implementing higher rates for drivers who use such phones. They want to estimate the proportion of drivers who talk on phone while they are driving to within 3% with 95% confidence. What size of sample should they take? \n" ); document.write( "

Algebra.Com's Answer #805647 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi\r\n" );
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document.write( "n =    Using p = .5 as none is given\r\n" );
document.write( "95% confidence level,  z = 1.96,  ME = .03\r\n" );
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document.write( "n = (1.96/.03)^2 (.5*.5) = 1067.1111\r\n" );
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document.write( "n = 1068 rounding up to nearest whole number\r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
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