Task 1

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Using Normal Distribution to Analyze Data

Martin suspects that people carry less cash with them than they used to because of credit cards and other cashless payment systems.He decides to work on inventing a new system for people to use in place of cash that would be more user friendly and safe.

Martin conducted a survey to help convince investors to back the development of his new cashless system.One afternoon at the local mall, Martin surveyed a random sample of 95 people and asked the question, How much cash are you carrying in your wallet?The mean of his data is $8.00 with a standard deviation of $2.50.Assume the data is normally distributed.Based on this information, answer the following questions.

Part A

Question

Select the correct answer.

What is the probability that a person who was surveyed has less than $5in his or her wallet? Use thenormal distribution tableto help you in your calculations.