Assume that the traffic to the web site of Smiley's People, Inc., which selis customized T-shirts, follows a normal distribution, with a mean of 4.54 million visitors per day and a standard deviation of 700,000 visitors per day. (a) What is the probability that the web site has fewer than 5 milion visitors in a single day? tf needed, round your answer to four decimal digits. (b) What is the probability that the web site has 3 million or more visitors in a single day? if needed, round your answer to four decimal digits. (c) What is the probability that the web site has between 3 million and 4 milion visitors in a single day? if needed, round your answer to four decimal digits. (d) Assume that 85\% of the time, the Smiley's People web servers can handle the daliy web traffic volume without purchasing additional servar capacy, What is the amount of web traffic that will require Smileyy People to purchase additional server capacty? If needed, round your answer to two decimal digits. million visitors per day