Question

A sign on the petrol pumps of a chain of petrol stations encourages customers to have their oil checked, claiming that one out of every four cars should have its oil topped up. A sample of ten cars entering a petrol station is randomly chosen.

Let X denote the number of cars that should have their oil topped up.



a) State the probability distribution of X (including the values of all parameters)

Probability distribution: Answer
Binomial
Parameters: Answer

= Answer

and Answer

= Answer
. Enter your answer to 2 decimal places.