Consider the following data for the next three (03) items that follow :

The incidence of suffering from a disease among workers in an industry has a chance of $33\frac{1}{3}\%.$

What is the probability that exactly 3 out of 6 workers suffer from a disease?

Consider the following data for the next three (03) items that follow :

The incidence of suffering from a disease among workers in an industry has a chance of $33\frac{1}{3}\%.$

What is the probability that no one out of 6 workers suffers from a disease?

Consider the following data for the next three (03) items that follow :

The incidence of suffering from a disease among workers in an industry has a chance of $33\frac{1}{3}\%.$

What is the probability that at least one out of 6 workers suffer from a disease ?

Consider the following frequency distribution for the next three (03) items follow :

Class	0-20	20-40	40-60	60-80	80-100
Frequency	17	p + q	32	p - 3q	19

 

The total frequency is 120. The mean is 50.

What is the value of p ?