An elementary school determines that 90% of parents whose children are enrolled in the Gifted & Talented Program complete and return the program evaluation survey at the end of the school year. At the end of the 2005-2006 school year, the school mailed 45 surveys to the parents. Consider the BINOMDIST function in Excel, BINOMDIST(number_s, trials, probability_s, cumulative). What is the value of the number of successes in this problem?