3. II'he number of 1visitors to a particular website on a given day is approxi- mately normally distributed with mean 5C\") and variance 5mg. A corn- pang].r is considering placing an advertisement on this website. It predicts that each visitor to the website will order its product 1with probability [1011 and that all visitors to the website act independently. {a} 1F'vm'hat is the expectation and variance of the number of orders the company receives? {b} Using a normal approxirnationw what is the probability,r that the number of orders the company receives is more than HI}