Define empirical probability.

Probability of impossible event is

Define empirical probability.

Define: (i) experiment (ii) deterministic experiment (iii) random experiment

(iv) sample space (v) event (vi) trial

P(E’) is

A randomly selected sample of 1,000 individuals were asked whether they were planning to buy a new cellphone in the next 12 months. A year later the same persons were interviewed again to find out whether they actually bought a new cellphone. The response of both interviews is given below

If a person was selected at random, what is the probability that he/she

(i) had a plan to buy (ii) had a plan to buy but a non-buyer

(iii) had no plan to buy but a buyer.

Which one can represent a probability of an event

Probability of any event x lies

The survey has been undertaken to determine whether there is a relationship between the place of residence and ownership of an automobile. A random sample of car owners, 200 from large cities, 150 from suburbs and 150 from rural areas were selected and tabulated as follow

If a car owner was selected at random, what is the probability that he/she

(i) owns a foreign car.

(ii) owns a foreign car and lives in a suburb.

(iii) lives in a large city and does not own a foreign car.

(iv) lives in large city and owns a foreign car.

(v) neither lives in a rural area nor owns a foreign car.

The following table shows the results of a survey of thousand customers who bought a new or used cars of a certain model

If a customer is selected at random, what is the probability that the customer

(i) bought a new car (ii) was satisfied (iii) bought an used car but not satisfied

Probability of sure event is