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- Probability distribution function
This module introduces the Probability Distribution Function (PDF) and its characteristics.
A discrete
probability distribution function has two characteristics:
- Each probability is between 0 and 1, inclusive.
- The sum of the probabilities is 1.
A child psychologist is interested in the number of times a newborn baby's crying wakes its mother after midnight. For a random sample of 50 mothers, the following information was obtained. Let
= the number of times a newborn wakes its mother after midnight. For this example,
= 0, 1, 2, 3, 4, 5.
= probability that
takes on a value
.
|
|
0 |
|
1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
takes on the values 0, 1, 2, 3, 4, 5.
This is a discrete
because
- Each
is between 0 and 1, inclusive.
- The sum of the probabilities is 1, that is,
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Suppose Nancy has classes
3 days a week. She attends classes 3 days a week
80% of the time,
2 days 15% of the time,
1 day 4% of the time, and
no days 1% of the time. Suppose one week is randomly selected.
Suppose one week is randomly chosen. Construct a probability distribution table (called a
table) like the one in the previous example. The table should have two columns labeled
and
. What does the
column sum to?
|
|
0 |
0.01 |
1 |
0.04 |
2 |
0.15 |
3 |
0.80 |
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Questions & Answers
Biology is a branch of Natural science which deals/About living Organism.
evolutionary history and relationship of an organism or group of organisms
AI-Robot
cell is the smallest unit of the humanity biologically
Abraham
HOW CAN MAN ORGAN FUNCTION
the diagram of the digestive system
allimentary cannel
Ogenrwot
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
Genetics is the study of heredity
Misack
how does twins formed?
Misack
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
is organisms that are similar into groups called tara
Yamosa
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Source:
OpenStax, Collaborative statistics. OpenStax CNX. Jul 03, 2012 Download for free at http://cnx.org/content/col10522/1.40
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