Question 7 According to a market research, the spendings of mall shoppers are normally distributed with a mean of 125.4 dollars and a standard deviation of 23 dollars. Let X be the spending of a randomly selected shopper. 1. Describe the probability distribution of X and state its parameters and σ: |(μ=| X - Select an answer Select an answer ZETNO F B X² 2. Find the probability that the spending of a randomly selected shopper is (Round the answer to 4 decimal places) a. less than 58 dollars. b. between 170 and 170 dollars. c. more than 113 dollars. σ (Round the answer to 4 decimal places) (Round the answer to 4 decimal places) 3. Find the 85-th percentile for the spendings of mall shoppers. decimal place) dollars (Round the answer to 1

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