Personal collections
Last year, an online store sold a large number of computers. 
of the computers were made by company F, 
were made by company G and 
were made by company H. A random sample of 3 customers who each bought a computer from this store is chosen. A random sample of 140 customers who each bought a computer from this store is chosen. Use a suitable approximation to find the probability that more than 24 of these customers bought a computer made by company H.
