A group conducted a survey of 13000 brides and grooms married in the United States and found that the average cost of a wedding is $24858. Assume that the cost of a wedding is normally distributed...

A group conducted a survey of 13000 brides and grooms married in the United States and found that the average cost of a wedding is $24858. Assume that the cost of a wedding is normally distributed with a mean of $24858 and a standard deviation of $5200.
A) What is the probability that a wedding costs less than $18000? (Round your answer to four decimal places)

B) what is the probability that a wedding costs between $18000 and $30000? (Round your answer to four decimal places)

C) what is the minimum cost (in dollars) for a wedding to be included around the most expensive 5% of weddings? (Round your answer to the nearest dollar)