In a certain school, the probabilities of the number of students who are reported tardy are shown in the following table: Number tardy: 1. Probability: 0.15 0.21 0.39 0.17 0.08 What is the expected number of tardies (rounded to two decimal places)? Need Help? Read It

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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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In a certain school, the probabilities of the number of students who are reported tardy are shown in the following table:
Number tardy:
0 1
2
3
4
Probability:
0.15 0.21 0.39 0.17 0.08
What is the expected number of tardies (rounded to two decimal places)?
Need Help?
Read It
Transcribed Image Text:In a certain school, the probabilities of the number of students who are reported tardy are shown in the following table: Number tardy: 0 1 2 3 4 Probability: 0.15 0.21 0.39 0.17 0.08 What is the expected number of tardies (rounded to two decimal places)? Need Help? Read It
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