TV World sold 1200 television sets this year. 240 of the sets were sold with extended warranties. What is the proportion of sets sold with extended warranties? Write your answer as a decimal. If the decimal is less than 1, write a 0 before the decimal point. Enter your answer to 1 decimal place.

Question

TV World sold 1200 television sets this year. 240 of the sets were sold with extended warranties. What is the proportion of sets sold with extended warranties?  Write your answer as a decimal.  If the decimal is less than 1, write a 0 before the decimal point. Enter your answer to 1 decimal place.

anonymous · Answer

The margin of error for the above proportion is give or take ________ ... Write your answer as a decimal rounded to the hundredths place. If the decimal is less than 1, write a 0 before the decimal point.

anonymous · Answer

the answer to the first question is 0.2... i am just having trouble finding the margin of error

klimenkov · Answer

$\frac{240}{1200}=\frac15=0.2$

anonymous · Answer

how do i calculate the margin of error?

klimenkov · Answer

Hm.. I don't speak English so fluently to understand the meaning of the second question.

anonymous · Answer

oh ok...

klimenkov · Answer

But I think the answer must be 0. But I'm not sure.

anonymous · Answer

ok thanks!