A European department store is developing a new advertising campaign for their new U.S. location, and their marketing managers need to understand their target market better. A survey of adult shoppers found the probabilities that an adult would shop at their new U.S. store classified by age is shown below.

a) What€™s the probability that a survey respondent will shop at the U.S. store?
b) What is the probability that a survey respondent will shop at the store given that they are younger than 20 years old?
c) What is the probability that a survey respondent who is older than 40 shops at the store?
d) What is the probability that a survey respondent is younger than 20 or will shop at the store?

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Shop No 0.04 0.10 Total Yes 0.26 0.30 <20 40 0.24 0.24 1.00 20-40 0.12 0.36 Total 0.38