Question

in a particular survey of internet users, 3647 respondents say that they use social networking sites and 1310 respondents say that they do not use social networking sites. what is the probability that a randomly selected person uses a social networking site? does that result suggest that it is likely (with a probability of 0.5 or greater) for someone to use social networking sites? the probability that a randomly selected person uses a social networking site is . (round to three decimal places as needed.)

Explanation:

Step1: Calculate total number of respondents

The total number of respondents is the sum of those who use social - networking sites and those who do not. So, $3647 + 1310=4957$.

Step2: Calculate the probability

The probability $P$ that a randomly selected person uses a social - networking site is the number of people who use social - networking sites divided by the total number of respondents. So, $P=\frac{3647}{4957}\approx0.736$.

Answer:

$0.736$