A company sends a leaflet to 8,000 customers. The leaflet describes two offers and a
special prize. The company estimates that the probability that a randomly chosen
customer will claim the 'free-offer' is 0.4 and that independently, the probability that the
customer will claim the 'cheap offer" is 0.2. Each free offer costs the company Rs 5 and
each cheap offer costs the company Rs 3.
Write down the expected numbers of customers claiming each offer and hence show
that the expected total cost to the company is Rs 20,800.
Using a suitable approximation, find the probability that the total cost to the company of
the offers exceeds Rs 20700
The company also estimates that the probability that a randomly chosen customer will
claim the special prize is 0.0005. Each special prize costs the company Rs 1 ,000.
Assuming independence, find the probability that the total cost to the company of the
special prizes exceeds Rs 4,000.
special prize. The company estimates that the probability that a randomly chosen
customer will claim the 'free-offer' is 0.4 and that independently, the probability that the
customer will claim the 'cheap offer" is 0.2. Each free offer costs the company Rs 5 and
each cheap offer costs the company Rs 3.
Write down the expected numbers of customers claiming each offer and hence show
that the expected total cost to the company is Rs 20,800.
Using a suitable approximation, find the probability that the total cost to the company of
the offers exceeds Rs 20700
The company also estimates that the probability that a randomly chosen customer will
claim the special prize is 0.0005. Each special prize costs the company Rs 1 ,000.
Assuming independence, find the probability that the total cost to the company of the
special prizes exceeds Rs 4,000.