The monthly incomes for 12 randomly selected people, each with a bachelor's degree in economics, are 4450.68 shown on the right. Complete parts (a) through (c) below. 4596.34 4366.26 4455.27 4151.98 3727 78 Assume the population is normally distributed. 4283.88 4527.74 4407.65 3946.94 4023.73 4221.88 (a) Find the sample mean. (Round to one decimal place as needed.) (b) Find the sample standard deviation. (Round to one decimal place as needed.) (c) Construct a 90% confidence interval for the population mean u. A 90% confidence interval for the population mean is ( D. (Round to one decimal place as needed.)
The monthly incomes for 12 randomly selected people, each with a bachelor's degree in economics, are 4450.68 shown on the right. Complete parts (a) through (c) below. 4596.34 4366.26 4455.27 4151.98 3727 78 Assume the population is normally distributed. 4283.88 4527.74 4407.65 3946.94 4023.73 4221.88 (a) Find the sample mean. (Round to one decimal place as needed.) (b) Find the sample standard deviation. (Round to one decimal place as needed.) (c) Construct a 90% confidence interval for the population mean u. A 90% confidence interval for the population mean is ( D. (Round to one decimal place as needed.)
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 3CA
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