grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) below. Assume the population is normally distributed. 2.1 3.1 2.6 1.9 0.8 4.0 2.4 1.1 3.5 0.1 2.5 3.2 Question content area bottom Part 1 (a) Find the sample mean. x=2.28 2.28 (Round to two decimal places as needed.) Part 2 (b) Find the sample standard deviation. s=1.15 1.15 (Round to two decimal places as needed.) Part 3 (c) Construct a 95% confidence interval for the population mean μ. A 95% confidence interval for the population mean is enter your response here ,enter your response here . (Round to two decimal places as needed.)
grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) below. Assume the population is normally distributed. 2.1 3.1 2.6 1.9 0.8 4.0 2.4 1.1 3.5 0.1 2.5 3.2 Question content area bottom Part 1 (a) Find the sample mean. x=2.28 2.28 (Round to two decimal places as needed.) Part 2 (b) Find the sample standard deviation. s=1.15 1.15 (Round to two decimal places as needed.) Part 3 (c) Construct a 95% confidence interval for the population mean μ. A 95% confidence interval for the population mean is enter your response here ,enter your response here . (Round to two decimal places 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
Section11.3: Shapes Of Distributions
Problem 20E
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Question
grade point averages (GPA) for
12
randomly selected college students are shown on the right. Complete parts (a) through (c) below.Assume the population is
|
|
Question content area bottom
Part 1
(a) Find the sample mean .
x=2.28
2.28
(Round to two decimal places as needed.)Part 2
(b) Find the sample standard deviation.
s=1.15
1.15
(Round to two decimal places as needed.)Part 3
(c) Construct a
95%
confidence interval for the population mean
μ.
A
,enter your response here
.
95%
confidence interval for the population mean is enter your response here
(Round to two decimal places as needed.)
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