Question

According to the Pew Internet & American Life Project, 54% of Internet users have a wireless connection to the Internet via a laptop, cell phone, game console, or other mobile device. Of these wireless users, 25% use Twitter to share updates about themselves. What is the probability that an Internet user has a wireless connection and uses Twitter?

Answer 1

Answer: 0.135

Step-by-step explanation:

if 54 % of internet users have a wireless connection then number of people that do nor have a wireless connection =46%.

Let A be the event that 54% of internet users have wireless connection.

Let B be the event that 25% of these users that have internet connection use twitter to share updates about themselves.

Hence, probability of A and B happening becomes:

P(AnB) = P(A) * P(B)

P(AnB) = 0.54 * 0.25

P(AnB) = 0.135