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3. A random sample of 50 grade 11 students is evaluated for these absences. The recorded data showed that in a certain 1 week period, 20 had no absences, 18 had 1 absence, 6 had 2 absences, 4 had 3 absences, and 2 had 4 absences. a. Let X the number of absences. What are the possible values of x? b. Construct a mass probability function for x. c. Find the probability that a randomly chosen student had more that 1 absence. d. Find the probability that a randomly chosen student had at most 2 absences. e. Find the probability that a randomly chosen student had at least 2 absences.

3. A random sample of 50 grade 11 students is evaluated for these absences. The recorded data showed that in a certain 1 week period, 20 had no absences, 18 had 1 absence, 6 had 2 absences, 4 had 3 absences, and 2 had 4 absences. a. Let X the number of absences. What are the possible values of x? b. Construct a mass probability function for x. c. Find the probability that a randomly chosen student had more that 1 absence. d. Find the probability that a randomly chosen student had at most 2 absences. e. Find the probability that a randomly chosen student had at least 2 absences.

A First Course in Probability (10th Edition)
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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3. A random sample of 50 grade 11 students is evaluated for these absences. The recorded data showed that in a certain 1 week period, 20 had no absences, 18 had 1 absence, 6 had 2 absences, 4 had 3 absences, and 2 had 4 absences. a. Let X the number of absences. What are the possible values of x? b. Construct a mass probability function for c. Find the probability that a randomly chosen student had more that 1 absence. d. Find the probability that a randomly chosen student had at most 2 absences. e. Find the probability that a randomly chosen student had at least 2 absences.
Transcribed Image Text:3. A random sample of 50 grade 11 students is evaluated for these absences. The recorded data showed that in a certain 1 week period, 20 had no absences, 18 had 1 absence, 6 had 2 absences, 4 had 3 absences, and 2 had 4 absences. a. Let X the number of absences. What are the possible values of x? b. Construct a mass probability function for c. Find the probability that a randomly chosen student had more that 1 absence. d. Find the probability that a randomly chosen student had at most 2 absences. e. Find the probability that a randomly chosen student had at least 2 absences.
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