The British created canals to irrigate the barren land in some areas of west Punjab and made farmers live there for cultivating wheat and other food crops. The colonies thus created were called 'canal colonies'.
To boost sinking sales, a cola company has decided to market a new product invisible cola. to test the popularity of the new product, it has offered invisible cola to 40 consumers and found that 2 people would buy it a) if invisible cola is offered for sale, what it the probability that more than 10% of the consumers will buy it? b) find a 90% confidence interval (confidence coefficient 1.65) for the expected percentage of consumers who will buy invisible cola.