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What conditions are necessary in order to use a test to test the differences between two population means?
The samples must be randomly selected, independent, and normally distributed. The following are necessary to use a t-test for small independent samples. 1. The samples must be randomly selected. 2. The samples must be independent. 3. Each population must have a normal distribution.
Do i say can i have samples about them or samples of them?
samples of them
What is the difference between grab and composite samples?
A composite sample is taken over a period of time, while a grab sample is a snap shot of what is in your well at the time you take the sample. Homeowner samples are generally grab samples.
What is sampling and holding time?
sampling time is the number of samples per second taken from a continuous signal to make it discrete and holding time is the time between two samples..
What is success independent samples design?
different samples of respondents from the population complete the survey over a time period
What is the difference between control samples and test experimental samples?
It calculates the difference between each set of pairs, and analyzes that list of differences. The P value answersthis question: If the median difference in the ... If your samples are small and there are no tied ranks, Prism calculates an ... The whole point of using a paired test is to control for experimental.
Were the items you observed all made of compounds Or did you observe some element samples too?
I don't know what you observed, but I observed everything - elements and compounds and even some atoms!
What conditions are necessary in order to use a test to test the differences between two population means?
The samples must be randomly selected, independent, and normally distributed. The following are necessary to use a t-test for small independent samples. 1. The samples must be randomly selected. 2. The samples must be independent. 3. Each population must have a normal distribution.
What conditions are necessary in order to use a t-test to test the differences between two population means?
The samples must be randomly selected, independent, and normally distributed. The following are necessary to use a t-test for small independent samples. 1. The samples must be randomly selected. 2. The samples must be independent. 3. Each population must have a normal distribution.
Why do polls have different outcomes?
Because they are based on samples and outcomes vary between different samples.
How are restriction enzymes used to look for differences between DNA samples?
Restriction enzymes cleave, or open, the DNA so that a sample can be taken and gel electrophoresis can separate the strands of DNA. From there, DNA probes bind to certain strands in each sample and DNA fingerprints can show the differences.
What tools are used to remove polups in a colonoscopy?
If suspicious growths are observed, tiny biopsy forceps or brushes can be inserted through the colon and tissue samples can be obtained
If two DNA samples showed an identical pattern and thickness of bands produced by gel electrophoresis what do the samples contain?
The two samples will contain the same DNA, meaning they are from the same person/organism. This is because each individual has different base sequences. In gel electrophoresis DNA samples are run through a gel using a charge. DNA will run from the negative cathode to the postive anode. Because we all have different base sequences/genes/DNA there will be differences in molecular size and so therefore different thickness. The DNA will also "run" faster between the samples, causing different spaced bands.
What is the piper diagram?
to understand the origin and relationship between groundwater samples.
Do i say can i have samples about them or samples of them?
samples of them
When testing for differences between two means the sample population are?
You are testing the difference between two means of independent sample and the population variance are not known. from those population you take two samples of two different size n1and n2. what degrees of freedom is appropriate to consider in this case
What is the difference between grab and composite samples?
A composite sample is taken over a period of time, while a grab sample is a snap shot of what is in your well at the time you take the sample. Homeowner samples are generally grab samples.
