Question

A recent survey was conducted of the 20 largest public companies in a particular country. Of these 20 companies, 99 were banking or investment companies based in city x. A total of 13 city x companies were on the top 20 list. Suppose we select one of these 20companies at random. Given that the company is based in city x, what is the probability that it is a banking or investment company?

Answer 1

Answer:

9/13

Step-by-step explanation:

Total Large companies = 20

Number of companies from City X  in Large Companies = 13

Number of Banking or investment companies from city X in Top 20 = 9

we select one of these 20 companies at random & given that the company is based in city x

Probability = (Banking or investment copmany in city x)/(Company in City x in top 20)

probability that it is a banking or investment company = 9/13