Suppose the time it takes a data collection operator to fill out an electronic form for a database is uniformly distributed between 1.1 and 2.0 minutes.

(d) What is the probability it will take more than 90 seconds to fill out the form? (Round your answer to 3 decimal places.)

Question

Suppose the time it takes a data collection operator to fill out an electronic form for a database is uniformly distributed between 1.1 and 2.0 minutes.

(d) What is the probability it will take more than 90 seconds to fill out the form? (Round your answer to 3 decimal places.)

mrhoola · Answer

Is the integral's lower limit 9 and upper limit infinity ?

mrhoola · Answer

or do you solve for the time it takes to fill out the form : integral lower limit 1.1 and upper limit is 9 , then  execute 1- result ??

anonymous · Answer

change minutes to seconds

anonymous · Answer

1.1 min  = 66 sec
2 min = 120 sec

anonymous · Answer

f(x) = 1 / ( 120 -66) = 1/54

anonymous · Answer

$$ \Large 
\int_{90}^{120}  \frac{1}{54} ~dx 
$$

mrhoola · Answer

Thank you

mrhoola · Answer

ok so ,  the probability it will take less than two minutes to fill out the form? from what you have shown me it should be :
$$\int\limits_{1.1}^{2.0} 1/(2.0-1.1) dx$$

mrhoola · Answer

the solution is 1 and that makes sense because the interval limit is 2 t

anonymous · Answer

right