Concept explainers
(a)
To Calculate: the proportion of observations from a standard
(a)
Explanation of Solution
Given:
Calculation:
Graph:
Above z=-2.25 it gives 98.78% of the data which is looking forth.
(b)
To Calculate: the proportion of observations from a standard normal distribution that falls in each of the following and sketch a standard normal curve.
(b)
Explanation of Solution
Given:
Calculation:
Graph:
Between z=-2.25 and z=1.77 it gives 94.94% of the data which is looking forth.
(c)
To Calculate: the proportion of observations from a standard normal distribution that falls in each of the following and sketch a standard normal curve.
(c)
Explanation of Solution
Given:
Calculation:
Graph:
Below z=2.89 it gives 99.81% of the data which is looking forth.
(d)
To Calculate: the proportion of observations from a standard normal distribution that falls in each of the following and sketch a standard normal curve.
(d)
Explanation of Solution
Given:
Calculation:
Graph:
Between z=1.44 and z=2.89 it gives 7.30% of the data which is looking forth.
Chapter 3 Solutions
Statistics Through Applications
Additional Math Textbook Solutions
Elementary Statistics Using Excel (6th Edition)
Statistics for Business and Economics (13th Edition)
Basic Business Statistics, Student Value Edition (13th Edition)
Elementary Statistics: Picturing the World (6th Edition)
Intro Stats, Books a la Carte Edition (5th Edition)
Statistical Reasoning for Everyday Life (5th Edition)
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