3.1 The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) 2.1 below. 1.6 0.7 Assume the population is normally distributed. 2.2 1.4 0.2 (a) Find the sample mean. x= (Round to two decimal places as needed.) (b) Find the sample standard deviation. (Round to two decimal places as needed.) (c) Construct a 90% confidence interval for the population mean . A 90% confidence interval for the population mean is ( (Round to two decimal places as needed.) 2.1 2.7 4.0 3.8 3.3
3.1 The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) 2.1 below. 1.6 0.7 Assume the population is normally distributed. 2.2 1.4 0.2 (a) Find the sample mean. x= (Round to two decimal places as needed.) (b) Find the sample standard deviation. (Round to two decimal places as needed.) (c) Construct a 90% confidence interval for the population mean . A 90% confidence interval for the population mean is ( (Round to two decimal places as needed.) 2.1 2.7 4.0 3.8 3.3
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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