A)
<h3>
The sample mean is 52</h3><h3>
The claimed population mean is 44</h3>
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The sample mean is the mean found in the survey (of the sample of people). The sample mean is found by adding up the values and dividing by the sample size n. The larger n gets, the closer the sample mean should get to the population mean. This is assuming the sample is random and representative of the population.
The population mean is a claim made by another study/survey/etc. Usually generalized statements such as "Americans spent an average of X dollars (in year Y)" would have X be considered the population mean.
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B)
<h3>Sample mean is 3.42</h3><h3>Claimed population mean is 3.56</h3>
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Same idea as part A, but we're using different numbers and a different problem context.
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Note: The year numbers and the sample sizes are not used to answer any of the four questions above.
2/10 x 2/10 = 4/10 that can be a expression sorry if im wrong
The expressions which represents the slope of a tangent to the curve 
at any point (x, y) are:
<h3>The slope of a tangent to the curve.</h3>
Mathematically, the slope of a tangent line to the curve is given by this equation:
Given the function:
When (x + h), we have:
Next, we would find the derivative of f(x):
Read more on slope of a tangent here: brainly.com/question/26015157
#SPJ1
141x but idk if you are multiplying the 4x but I did
