44% of US adults 18-34 years think that "Made In America" ads boost sales. Another poll show that 78% of adults in the 18-34 years category use social media online. Suppose that 85% of US adults in the 18-34 years category think that "Made in America" ads boost sales or use social media online.
If US adult in the 18-34 years category is randomly selected
A: What is the probability that the person thinks that " Made in America" ads boost sales and uses social media online?
B: What is the probability that made in America ads boost sales given that the person does not use social media onl

Question

44% of US adults 18-34 years think that "Made In America" ads boost sales. Another poll show that 78% of adults in the 18-34 years category use social media online. Suppose that 85% of US adults in the 18-34 years category think that "Made in America" ads boost sales or use social media online.
  If  US adult in the 18-34 years category is randomly selected
 A: What is the probability that the person thinks that " Made in America" ads boost sales and uses social media online?
 B: What is the probability that made in America ads boost sales given that the person does not use social media onl

kropot72 · Answer

The US adults can be divided into four categories as follows:
A = those that use social media online and do not agree that ads boost sales.
B = those that use social media online and agree that ads boost sales.
C = those that do not use social media online and do not agree that ads boost sales.
D = those that do not use social media online and agree that ads boost sales.

A + D = 85%
B + D = 44%
A + B = 78%
By solving the above equations you can find the percentages A, B and D

Can you do that?

anonymous · Answer

Not sure where to start.