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(a) Find the sample mean. (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 p. A 90% confidence interval for the population mean is ( D. (Round to two decimal places as needed.)

(a) Find the sample mean. (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 p. A 90% confidence interval for the population mean is ( D. (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) below. 22 3.5 2.8 D Assume the population is normally distributed. 1.5 0.9 4.0 2.3 1.3 3.8 0.2 2.5 3.4 (a) Find the sample mean. x= (Round to two decimal places as needed.) (b) Find the sample standard deviation. s= (Round to two decimal places 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 two decimal places as needed.)
Transcribed Image Text:The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) below. 22 3.5 2.8 D Assume the population is normally distributed. 1.5 0.9 4.0 2.3 1.3 3.8 0.2 2.5 3.4 (a) Find the sample mean. x= (Round to two decimal places as needed.) (b) Find the sample standard deviation. s= (Round to two decimal places 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 two decimal places as needed.)
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