Use the following information to answer the question. According to the website ww.costofwedding.com, the average cost of
flowers for a wedding is $698. Recently, in a random sample of 40 weddings in the U.S. it was found that the average cost of the flowers was $734, with a standard deviation of $102. On the basis of this, a 95% confidence interval for the mean cost of flowers for a wedding is $701 to $767.
-Suppose that the average song length in America is 4 minutes with a standard deviation of 1.25 minutes. It is known that song length is not normally distributed. Find the probability that a single
Randomly selected song from the population will be longer than 4.25 minutes. Round to the nearest
Thousandth.
A) 0.421
B) 0.079
C) 0.579
D) This probability cannot be determined because we do not know the distribution of the population.
Correct Answer:
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