If you have samples of n 1 equals 22 and n 2 equals 20, in performing the pooled-variance t test, you have 40 degrees of freedom.
The t-test method is a method where we analyze two sets of data which both these data are independent of each other. This pooled variance test helps us in getting the overall variance in both these different sample sets when we know that both the sample sets are almost equal.
To calculate degrees of freedom, we have the formula
df = n1 +n2 -2
According to the question, n1= 22 and n2= 20
Therefore, degree of freedom= 22 +20 -2 = 40
Hence, degree of freedom is 40.
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His work was ignored because it was not widely distributed, and he didn't make an effort to promote himself. Actually, the reasons are more complex. He was part of the social and scientific circle of the time. He had opportunities to travel and to attend scientific conferences . When he published his paper in 1865, it was exchanged with the publications of at least 120 other associations and societies and was available in many libraries and scientific institutes. His mathematical ratio of inheritance was probably not understood by many botanists . Subsequent mentions of Mendel's results usually focused on the hybrids that Mendel made , ignoring the mathematics altogether.
Funneling (or shrinkage) is the correct answer.
Explanation: The phenomenon by which most criminals escape punishment and evade restitutions is known as the funnelig (or shrinkage) phenomenon which has a lot to do with a "leaky net". The reason why many escape from punishment and their financial obligations are:
- Victims did not report the crimes.
- Crimes not responded to or investigated.
- Criminals were not arrested, indicted, prosecuted or convicted.
- Criminals were not able to or unwilling to make the restitution.
A-B-A-B design could provide the most valid non intervention measure with demonstration of experimental control.
In statistics, the experimental design, also known as the design of experiment (DOE), is described as the layout of an information-gathering experiment in which a variation may or may not be present. Typically, controlled experiments use this phrase. In order to make the results more reliable, these tests minimize the impacts of the variable. In this design, a group of people, plants, animals, etc. may participate in an experimental unit's procedure.
Pre-experimental research designs are the most straightforward kind of experimental research designs in statistics. Following the identification of some factors as causes and effects, a group or groups are kept under observation in this method. Typically, this approach is used to determine whether the targeted group need additional research. This is the reason why this procedure is regarded as being economical.
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The answer is : monocular depth
Monocular depth affect the perception that is held by an individual on<u> how far an object is located based on how big</u> the object look like in that individual's vision.
When the driver cross the railroad, the driver most likely thought that the train is still located far away form him/her because it looks small in the driver's perception. He misjudge it and caused the crash in the end.
