The grade point averages (GPA) of 15 randomly selected college students are 2.3, 3.3, 2.6, 1.8, 0.2, 3.1, 4.0, 0.7, 2.3, 2.0, 3.1, 3.4, 1.3, 2.6, 2.6 1. The sample mean is (Round to one decimal place) 2. The sample standard deviation is (Round to one decimal place) 3. The sample size is
The grade point averages (GPA) of 15 randomly selected college students are 2.3, 3.3, 2.6, 1.8, 0.2, 3.1, 4.0, 0.7, 2.3, 2.0, 3.1, 3.4, 1.3, 2.6, 2.6 1. The sample mean is (Round to one decimal place) 2. The sample standard deviation is (Round to one decimal place) 3. The sample size is
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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Transcribed Image Text:The grade point averages (GPA) of 15 randomly selected college students
are
2.3, 3.3, 2.6, 1.8, 0.2, 3.1, 4.0, 0.7, 2.3, 2.0, 3.1, 3.4, 1.3, 2.6, 2.6
1. The sample mean is
(Round to one decimal place)
2. The sample standard deviation is
(Round to one
decimal place)
3. The sample size is
4. The degree of freedom for the Studentized version of the sample
mean is
5. The point estimate for the mean GPA of ALL students at this college is
6. The t-value for a 99% confidence interval is t =
7. The Margin of error for a 99% confidence interval for this sample is
(Round to one decimal place)
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