Question

Consider the 300 households surveyed in the DASCO Electronics example that actually

purchased a large screen Television. These respondents were asked to identity how the

purchased was transacted

Type of Purchase No. of Respondent

In store 183

Internet 87

Mail Order 30



Calculate the probability of picking a household that purchased the television via Internet or

by Mail order if the one respondent is randomly selected from a sample of 300 household.

Answer 1

Formula: p( A or B) = p(A) +p(B)

Solution: p( via internet or mail)= p(internet)+p( mail)

= 87/300 + 30/300

= 117/300=0.39