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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9.1
Section Exercises
Section 9.1
9.1
9.2
9.3
Ages A study of all the students at a small college showed a mean age of 20.7 and a
standard deviation of 2.5 years.
a. Are these numbers statistics or parameters? Explain.
b. Label bot numbers with their appropriate symbol (such as x, μ, s, or o).
Units A survey of 100 random full-time students at a large university showed the mean
number of semester units that students were enrolled in was 15.2 with a standard
deviation of 1.5 units.
a. Are these numbers statistics or parameters? Explain.
b. Label both numbers with their appropriate symbol (such as x, u, s, or o).
Exam Scores The distribution of the scores on a certain exam is N(80, 5) which means
that the avam ceoros are Normally distributed with
80
Aa
488
W
Transcribed Image Text:Section Exercises Section 9.1 9.1 9.2 9.3 Ages A study of all the students at a small college showed a mean age of 20.7 and a standard deviation of 2.5 years. a. Are these numbers statistics or parameters? Explain. b. Label bot numbers with their appropriate symbol (such as x, μ, s, or o). Units A survey of 100 random full-time students at a large university showed the mean number of semester units that students were enrolled in was 15.2 with a standard deviation of 1.5 units. a. Are these numbers statistics or parameters? Explain. b. Label both numbers with their appropriate symbol (such as x, u, s, or o). Exam Scores The distribution of the scores on a certain exam is N(80, 5) which means that the avam ceoros are Normally distributed with 80 Aa 488 W
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