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**Finding Confidence Intervals. In Exercises 9–16, assume that each sample is a simple random sample obtained from a population with a normal distribution.**

**10. Atkins Weight Loss Program** In a test of weight loss programs, 40 adults used the Atkins weight loss program. After 12 months, their mean weight *loss* was found to be 2.1 lb, with a standard deviation of 4.8 lb. Construct a 90% confidence

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# Chapter 7 Solutions

Essentials of Statistics (6th Edition)

#### Additional Math Textbook Solutions

Fundamentals of Statistics (5th Edition)

Introductory Statistics

Basic Business Statistics, Student Value Edition

Elementary Statistics: Picturing the World (6th Edition)

Elementary Statistics: Picturing the World (7th Edition)