The curve is nonsymmetrical and skewed to the right.
There is a different chi-square curve for each
.
The test statistic for any test is always greater than or equal to zero.
When
, the chi-square curve approximates the normal. For
~
the mean,
and the standard deviation,
.
Therefore,
~
, approximately.
The mean,
, is located just to the right of the peak.
In the next sections, you will learn about four different
applications of the Chi-Square Distribution. These hypothesis tests arealmost always right-tailed tests. In order to understand why the tests are
mostly right-tailed, you will need to look carefully at the actualdefinition of the test statistic. Think about the following while you
study the next four sections. If the expected and observed values are"far" apart, then the test statistic will be "large" and we will reject in
the right tail. The only way to obtain a test statistic very close tozero, would be if the observed and expected values are very, very close to
each other. A left-tailed test could be used to determine if the fit were"too good." A "too good" fit might occur if data had been manipulated or
invented. Think about the implications of right-tailed versus left-tailedhypothesis tests as you learn the applications of the Chi-Square
Distribution.
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life