A teacher is currently teaching two statistics classes, one at 8:00 A.M.and the other at 10:00 A.M. The accompanying table summarizes the attendance records by showing the probability of the number of absent students per class. Complete parts a and b. Probability Number of Absent Students 8 A.M. Class 10 A.M. Class 0 0.05 0.15 1 0.19 0.37 2 0.29 0.21 3 0.18 0.15 4 0.21 0.07 5 0.08 a. Calculate the mean number of students absent for each class. Calculate the mean number of students absent from the 8:00 A.M. class. μ= (Type an integer or a decimal. Do not round.) . Calculate the mean number of students absent from the 10:00 A.M. class. μ= (Type an integer or a decimal. Do not round.) b. Calculate the standard deviation for the number of students absent for each class. Calculate the standard deviation for the number of students absent from the 8:00 A.M.class. σ= (Type an integer or a decimal rounded to two decimal places as needed.) Calculate the standard deviation for the number of students absent from the 10:00 A.M. class. σ= (Type an integer or a decimal rounded to two decimal places as needed.)
A teacher is currently teaching two statistics classes, one at 8:00 A.M.and the other at 10:00 A.M. The accompanying table summarizes the attendance records by showing the probability of the number of absent students per class. Complete parts a and b. Probability Number of Absent Students 8 A.M. Class 10 A.M. Class 0 0.05 0.15 1 0.19 0.37 2 0.29 0.21 3 0.18 0.15 4 0.21 0.07 5 0.08 a. Calculate the mean number of students absent for each class. Calculate the mean number of students absent from the 8:00 A.M. class. μ= (Type an integer or a decimal. Do not round.) . Calculate the mean number of students absent from the 10:00 A.M. class. μ= (Type an integer or a decimal. Do not round.) b. Calculate the standard deviation for the number of students absent for each class. Calculate the standard deviation for the number of students absent from the 8:00 A.M.class. σ= (Type an integer or a decimal rounded to two decimal places as needed.) Calculate the standard deviation for the number of students absent from the 10:00 A.M. class. σ= (Type an integer or a decimal rounded to two decimal places as needed.)
A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Question
A teacher is currently teaching two statistics classes, one at 8:00 A.M.and the other at 10:00 A.M. The accompanying table summarizes the attendance records by showing the probability of the number of absent students per class. Complete parts a and b.
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Probability
|
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|---|---|---|---|
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Number of Absent Students
|
8 A.M. Class
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10 A.M. Class
|
|
|
0
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0.05
|
0.15
|
|
|
1
|
0.19
|
0.37
|
|
|
2
|
0.29
|
0.21
|
|
|
3
|
0.18
|
0.15
|
|
|
4
|
0.21
|
0.07
|
|
|
5
|
0.08
|
|
a. Calculate the mean number of students absent for each class.
Calculate the mean number of students absent from the 8:00 A.M. class.
μ=
(Type an integer or a decimal. Do not round.)
. Calculate the mean number of students absent from the 10:00 A.M. class.
μ=
(Type an integer or a decimal. Do not round.)
b. Calculate the standard deviation for the number of students absent for each class.
Calculate the standard deviation for the number of students absent from the 8:00 A.M.class.
σ=
(Type an integer or a decimal rounded to two decimal places as needed.)
Calculate the standard deviation for the number of students absent from the 10:00 A.M. class.
σ=
(Type an integer or a decimal rounded to two decimal places as needed.)
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