Answer: d. $72,179
Explanation:
For couples filing jointly in 2018, their tax rates are as follows:
10% for $0 to $19,050
12% for $19,051 to $77,400
22% for $77,401 to $165,000
24% for $165,001 to $315,000
32% for $315,001 to $400,000
But income tax is progressive, so the tax rate only applies to the amount in that bracket above the basic tax. So their first income of $19050 is taxed at 10% and the next 58350 is taxed at 12% and so on.
For a taxable income of 340000
, the applicable tax is as follows:
19050 at 10% = 1905
58350 at 12% = 7002
87600 at 22% = 19272
150000 at 24% = 36000
25000 at 32% = 8000
1905 + 7002 + 19272 + 36000 + 8000 = $72,179
Answer:
Ten year old boys
Explanation:
Cross sectional research design are usually used to understand the dominant character or features in a population at a particular point in time. Some of the characteristics of a this study design are; takes place at one time, allows researchers to compare certain characteristics such as age, can provide information about what is happening with a certain population and what is happening in another population say 5 years later, and then use this information as a basis of comparison. Researchers do not use this study to show cause-and-effect, but it is used mainly for correlational analysis.
If a researcher studies the effectiveness of anti-drug commercials by comparing the self-reported frequency of drug use among teens six months before and six months after the commercial aired, she is using an Pretest/posttest design.
Answer: Option D
<u>Explanation:</u>
The pre-test is defined as a test carried out on a product or service before it is set to enter into the market for sale. It is usually done to check not only the effectiveness and efficiency of the product or service but also to check the safety of it too.
Sometimes a product or service is exposed to text after it enters the market. This is known as post-test as that is carried out after the product enters the market.
Answer:
Trade
Explanation:
Because of Italy's long coastlines, Italian city states became wealthy through trade.
Hope it helps!
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Answer: C. Confounding
Explanation: Confounding variable is a variable or factor which lead us to believe that there is a correlation or relationship between a two variables, However, the observed correlation or relationship is non-existent or spurious. Confounding variables are caused by external influences the outcome of experiments.
In the scenario above, a correlation doesn't exist between stress and employees ability to work, until a confounding variable 'supervisor' came in resulting in a spurious relationship between the previously measured variables.
