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- Hypothesis testing: single mean
- Additional information
- In a
hypothesis test problem, you may see words such as "the level of significance is
1%." The "1%" is the preconceived or preset
.
- The statistician setting up the hypothesis test selects the value of
to use
before collecting the sample data.
-
If no level of significance is given, the accepted standard is to use
.
- When you calculate the
p-value and draw the picture, the p-value is the area in the left tail,
the right tail, or split evenly between the two tails. For this reason, we call thehypothesis test left, right, or two tailed.
- The
alternate hypothesis ,
, tells you if the test is left, right, or two-tailed.
It is the
key to conducting the appropriate test.
-
never has a symbol that contains an equal sign.
-
Thinking about the meaning of the
p-value : A data analyst (and anyone else) should have more confidence that he made the correct decision to reject the null hypothesis with a smaller p-value (for example, 0.001 as opposed to 0.04) even if using the 0.05 level for alpha. Similarly, for a large p-value like 0.4, as opposed to a p-value of 0.056 (alpha = 0.05 is less than either number), a data analyst should have more confidence that she made the correct decision in failing to reject the null hypothesis. This makes the data analyst use judgment rather than mindlessly applying rules.
The following examples illustrate a left, right, and two-tailed test.
:
:
This is a test of a single population proportion.
tells you the test is
right-tailed . The picture of the p-value is as follows:
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Questions & Answers
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AI-Robot
HOW CAN MAN ORGAN FUNCTION
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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
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
cell is the building block of life.
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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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