Concept explainers
a.
To show: The
a.
Explanation of Solution
Given:
The probability distribution is:
X | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
Probability | 0.301 | 0.176 | 0.125 | 0.098 | 0.079 | 0.067 | 0.058 | 0.051 | 0.046 |
Calculation:
The sum of probabilities is:
The probabilities are between 0 and 1 and the addition of probabilities is equal to 1. Thus, the provided probability distribution is a legitimate probability distribution.
b.
To construct: The graph for the probability distribution and interpret it.
b.
Explanation of Solution
Graph
The graph could be constructed as:
Interpretation:
The most of the data is on the right side of the graph. Thus, the distribution is skewed to the right.
c.
To describe: The
c.
Answer to Problem 5E
The probability is 0.222.
Explanation of Solution
Calculation:
Thus, the required probability is 0.222.
d.
To express: The
d.
Answer to Problem 5E
The probability is 0.778.
Explanation of Solution
Calculation:
The event “first digit is at most 5” in terms of X could be written as
Thus, the required probability is 0.222.
Chapter 6 Solutions
The Practice of Statistics for AP - 4th Edition
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Statistical Reasoning for Everyday Life (5th Edition)
Basic Business Statistics, Student Value Edition (13th Edition)
Elementary Statistics: Picturing the World (6th Edition)
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