Question

Two thousand randomly selected adults were asked whether or not they have ever shopped on the
Internet. The following table gives a two-way classification of the responses obtained.
Have Shopped Have Never Shopped
Male 500 700
Female 300 500
a. Suppose one adult is selected at random from these 2000 adults. Find the following probabilities.
i. P(has never shopped on the Internet and is a male)
ii. P(has shopped on the Internet and is a female)
b. Mention what other joint probabilities you can calculate for this table and then find those. You
may draw a tree diagram to find these probabilities.

Answer 1

Answer:

2 second one is the answer