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What else can I help you with?
Factors to consider in determining sample size?
Factors that determine sample size
What is the relationship between sample and population?
From a sample of a population, the properties of the population can be inferred.
Factors that determine sample size?
1. population to deal with in the sample 2. Location. ocation where the sample will be done 3. design. how the sample will be taken 4. result. how the outcome will be determined
When can statistics be used to gain information about a population from a sample?
When the sample - whether it is random or systematic - is somehow representative of the population.
What is the chief aim of probability sampling is to be able to select?
The chief aim is to find a representative sample; that is, a sample which reflects the properties of the population, as a whole.
What properties could be used to help determine whether the sample is rreally zinc?
Some properties that could be used to help determine if a sample is really zinc include its density (7.14 g/cm3), melting point (419.5 °C), color (silvery blue), and reaction with acid (produces hydrogen gas). Conducting a flame test, where zinc emits a blue-green flame, can also be used to identify zinc.
How can you determine whether a sample is representative of a population?
Take a simple random sample.
How could one determine whether a sample of aspirin is pure or not?
The determination is by chemical analysis.
How can you determine if something is pure metal?
One way to determine if something is a pure metal is through a chemical test called a flame test, where the sample is heated and the color of the flame produced is observed. Another method is through using physical properties such as melting point, density, and electrical conductivity to compare with known properties of the metal in its pure form. Additionally, analyzing the sample using techniques like spectroscopy or X-ray diffraction can also help determine the purity of the metal.
What is characteristic property of a substance?
The characteristic properties of a substance are always the same whether the sample one is observing is large or small.
How do we identify molecules in a given sample?
Molecules in a given sample can be identified through techniques such as spectroscopy, chromatography, and mass spectrometry. These methods analyze the physical and chemical properties of the molecules to determine their identity.
Why can't you use density or reactivity to determine whether a sample of cobalt or nickel?
If you had a piece of metal, you could use these properties to determine which element it is. Iron has different physical and chemical properties than the other two elements. The density of iron is much less than cobalt or nickel, and it reacts with oxygen in the air.
How do you find whether given sample is DNA or RNA?
A spectrophotometer can be used to know if a sample is DNA or RNA. DNA has an absorbance maximaat 260nm, whereas RNA has an absorbance maxima at 280nm. By looking at which one of these two wavelengths the sample is more excited, one can determine if the sample is DNA or RNA.
How can a forensics lab determine from antibody class alone whether a sample is blood plasma or another body secretion such as semen or tears?
oh easy ......................
How do you find out if a sample ink is pure?
One common way to determine if a sample ink is pure is to use chromatography techniques to separate the components of the ink and analyze their composition. Another method is to compare the sample ink's properties, such as melting point or boiling point, with the known properties of the pure ink. A chemical analysis using spectroscopy techniques can also be employed to identify any impurities present in the ink sample.
How do you determine an adequate sample size?
A sample size is needed whenever you conduct an experiment. How you determine an adequate sample size depends on the scope of what you're testing, such as medications.
Do characteristic properties change when sample changes?
Characteristic properties of a substance do not change when the sample changes. These properties, such as melting point, boiling point, density, and chemical reactivity, are inherent to the substance itself and remain constant regardless of the size or form of the sample.
