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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Answer:
All of the following are true except Mnemonic techniques don't work.
Explanation:
Information processing perspective is a term in developmental psychology, that describes the mental development in terms of age changes in the mind of an individual.
Hence, according to the information-processing perspective, an issue impairing later-life memory includes the following:
1. the executive processor doesn't function well.
2. poor focusing ability causes irrelevant thoughts to intrude.
3. the hippocampus takes over from the frontal lobes.
Therefore, in the options above, all the following issues impaired later-life memory except Mnemonic techniques don't work.
Answer:
B. number of percentage points annual output falls for each percentage point reduction in inflation.
Explanation:
The Sacrifice Rate is the loss of output due to the fight against inflation, and can be expressed as how much product is lost to reduce inflation by 1 percentage point.
The Sacrifice Rate is a proposition by economist Robert Lucas Jr, who noted that the slowdown in long-term inflation is associated with a reduction in the production of goods and services for a certain period until economic agents adapt to the new reality. pricing and restructuring their expectations of the economy. Therefore, the social cost of fighting inflation is a reduction in GDP and an increase in the unemployment rate.
Based on this context, we can conclude that the correct answer to your question is the letter B.
Economic reasons – industrialization in the late 1800s increased the need to trade
with other countries. Manufacturers spent money constructing factories with
assembly lines, but big companies often produced more products than the
American people could buy. This caused companies to find places to sell their
products.
The answer to this question Stealing working parts for resale<span>
auto repair shop often formed a direct relatioship with the manufacturing which make them able to provide a certain parts with lower price.
This privde opportuunities for the stealer because he could provide the product to the market with siginificantly lower margin.</span>