Prepare a probability distribution then find the mean, variance and standard deviation for the courses completed by the students in a certain college.
Prepare a probability distribution then find the mean, variance and standard deviation for the courses completed by the students in a certain college.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:1. Prepare a probability distribution then find the mean, variance and standard
deviation for the courses completed by the students in a certain college.
Number of Students (X)
Course
Tourism
285
HRM
460
Business Administration
152
Mass Communication
185
Architecture and Engineering
98
1,180
Total
2. Results of a study conducted to determine the water consumptions in number of
cubic meters of households in a subdivision along with the corresponding
probabilities are show below. Find the mean, variance and standard deviation.
Number of
48
50
52
54
56
cubic meters
|().
Probability P(X)
0.25
0.30
0.18
0.15
0.12
3. The number of inquiries received per day by the Office of Admissions ina certain
university is shown below. Find the mean, variance and standard deviation.
Number of
22
23
24
25
26
27
Inquiries (X)
Probability
P(X)
X. P(X)
X2 . P(X)
0.08
0.19
0.36
0.25
0.07
0.05
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