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Chapter 7 6 Give your final answers rounded to 4 digits after the decimal point...

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Chapter 7 6 Give your final answers rounded to 4 digits after the decimal point Annual income The mean annual income for people in a certain city in thousands of dollars is 40 with a standard deviation of 28 A pollster draws a sample of 90 people to interview a What is the probability that the sample mean income is less than 38 5 points

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