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MATH 146, Spring Quarter 2022, EXAM 3 NAME: 4. In a survey of 35 adult Americans, it was found that the mean age (in years)

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MATH 146, Spring Quarter 2022, EXAM 3 NAME: 4. In a survey of 35 adult Americans, it was found that the mean age (in years) that people would like to live is 87.9 years with a standard deviation of 15.5 years. a. (5 pts) Construct and interpret a 95% confidence interval for the mean. b. (3 pts) How many adult Americans must be surveyed to estimate the mean age that people would like to live to within 2 years with a 95% confidence

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