3) A certain motel in Tainan has determined that 70 percent of all calls for motel reservations request 3) non-smoking rooms. Recently, the customer service manager for the motel randomly selected 25 calls. Assuming that the distribution of calls requesting non-smoking rooms is described by a binomial distribution, of the 25 selected calles, what is the expected number of requests for non-smoking rooms? Find the probability that 23 or less of the calls request non-smoking rooms? 4) The number of defects discovered in a random sample of 1000 products produced at a textile 4) company is binomially distributed with p = .005. Based on this, what is the standard deviation of the number of defects per sample of size 1000