Marketing and Consumer Behavior According to an annual survey conducted by TheKnot.com, the mean cost of a wedding in 2012 was $28,427.7 This is still less than the high in 2008, but it reflects increasing confidence in the economy. Suppose the cost for a wedding is normally distributed, with a standard deviation of $1500, and a wedding is selected at random.
a. Find the probability that the wedding costs more than $31,000.
b. Find the probability that the wedding costs between $26,000 and $30,000.
c. Find the probability that the wedding costs less than $25,000.