Q.1.1 The following contingency table gives the results of a sample survey of South African male and female respondents with regard to their preferred supermarket: Preferred Supermarket Pick n Pay...

Q.1.1 The following contingency table gives the results of a sample survey of South African
male and female respondents with regard to their preferred supermarket:
Preferred Supermarket
Pick n Pay Checkers Woolworths Total
No. of Females 60 70 115 245
No. of Males 50 70 35 155
Total 110 140 150 400

Q.1.1.1 What is the probability of randomly selecting a female respondent from
the sample?


Q.1.1.2 What is the probability of randomly selecting a respondent who is male
and prefers Checkers?


Q.1.1.3 What is the probability of selecting a female respondent, given that the
preferred supermarket is Pick n Pay?