Category: S2

A factory produces components. Each component has a unique identity number and it is assumed that 2% of the components are faulty. On a particular day, a quality control manager wishes to take a...

A disease occurs in 3% of a population. State any assumptions that are required to model the number of people with the disease in a random sample of size n as a binomial distribution.(2)...

A bag contains a large number of 1p, 2p and 5p coins. 50% are 1p coins 20% are 2p coins 30% are 5p coins A random sample of 3 coins is chosen from the...

The time in minutes that Elaine takes to checkout at her local supermarket follows a continuous uniform distribution defined over the interval [3, 9]. Find Elaine’s expected checkout time,(1) the variance of the time...

Write down the conditions under which the Poisson distribution can be used as an approximation to the binomial distribution.(2) The probability of any one letter being delivered to the wrong house is 0.01 On...