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A group conducted a survey of 13,000 brides and grooms married in the United States and found that the average cost of a wedding is $26,858. Assume that the cost of a wedding is normally distributed with a mean of $26,858 and a standard deviation of $5,900.
(a) What is the probability that a wedding costs less than $20,000? (Round your answer to four decimal places.)
(b) What is the probability that a wedding costs between $20,000 and $32,000? (Round your answer to four decimal places.)
(c) What is the minimum cost (in dollars) for a wedding to be included among the most expensive 5% of weddings? (Round your answer to the nearest dollar.)
Sagot :
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